Code of Federal Regulations (alpha)

CFR /  Title 47  /  Part 80  /  Sec. 80.361 Frequencies for narrow-band direct-printing (NBDP),

(a) Paired channels. The following frequencies are available for assignment to public coast stations for narrow-band direct-printing (NBDP) and data transmissions. The paired ship frequencies are available for use by authorized ship stations for NBDP and data transmissions. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Paired frequencies for NBDP and data transmissions (kHz)

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Ch. no. 4 MHz 6 MHz 8 MHz 12 MHz 16 MHz 18/19 MHz 22 MHz 25/26 MHz

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Coast Ship Coast Ship Coast Ship Coast Ship Coast Ship Coast Ship Coast Ship Coast Ship------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------1..................................... 4210.5 4172.5 6314.5 6263.0 ....... ....... 12579.5 12477.0 16807.0 16683.5 19681.0 18870.5 22376.5 22284.5 26101.0 25173.02..................................... 4211.0 4173.0 6315.0 6263.5 8417.0 8377.0 12580.0 12477.5 16807.5 16684.0 19681.5 18871.0 22377.0 22285.0 26101.5 25173.53..................................... 4211.5 4173.5 6315.5 6264.0 8417.5 8377.5 12580.5 12478.0 16808.0 16684.5 19682.0 18871.5 22377.5 22285.5 26102.0 25174.04..................................... 4212.0 4174.0 6316.0 6264.5 8418.0 8378.0 12581.0 12478.5 16808.5 16685.0 19682.5 18872.0 22378.0 22286.0 26102.5 25174.55..................................... 4212.5 4174.5 6316.5 6265.0 8418.5 8378.5 12581.5 12479.0 16809.0 16685.5 19683.0 18872.5 22378.5 22286.5 26103.0 25175.06..................................... 4213.0 4175.0 6317.0 6265.5 8419.0 8379.0 12582.0 12479.5 16809.5 16686.0 19683.5 18873.0 22379.0 22287.0 26103.5 25175.57..................................... 4213.5 4175.5 6317.5 6266.0 8419.5 8379.5 12582.5 12480.0 16810.0 16686.5 19684.0 18873.5 22379.5 22287.5 26104.0 25176.08..................................... 4214.0 4176.0 6318.0 6266.5 8420.0 8380.0 12583.0 12480.5 16810.5 16687.0 19684.5 18874.0 22380.0 22288.0 26104.5 25176.59..................................... 4214.5 4176.5 6318.5 6267.0 8420.5 8380.5 12583.5 12481.0 16811.0 16687.5 19685.0 18874.5 22380.5 22288.5 26105.0 25177.010.................................... 4215.0 4177.0 6319.0 6267.5 8421.0 8381.0 12584.0 12481.5 16811.5 16688.0 19685.5 18875.0 22381.0 22289.0 26105.5 25177.511.................................... ....... ....... ....... ....... 8421.5 8381.5 12584.5 12482.0 16812.0 16688.5 19686.0 18875.5 22381.5 22289.5 26106.0 25178.012.................................... 4215.5 4178.0 6319.5 6268.5 8422.0 8382.0 12585.0 12482.5 16812.5 16689.0 19686.5 18876.0 22382.0 22290.0 26106.5 25178.513.................................... 4216.0 4178.5 6320.0 6269.0 8422.5 8382.5 12585.5 12483.0 16813.0 16689.5 19687.0 18876.5 22382.5 22290.5 26107.0 25179.014.................................... 4216.5 4179.0 6320.5 6269.5 8423.0 8383.0 12586.0 12483.5 16813.5 16690.0 19687.5 18877.0 22383.0 22291.0 26107.5 25179.515.................................... 4217.0 4179.5 6321.0 6270.0 8423.5 8383.5 12586.5 12484.0 16814.0 16690.5 19688.0 18877.5 22383.5 22291.5 26108.0 25180.016.................................... 4217.5 4180.0 6321.5 6270.5 8424.0 8384.0 12587.0 12484.5 16814.5 16691.0 19688.5 18878.0 22384.0 22292.0 26108.5 25180.517.................................... 4218.0 4180.5 6322.0 6271.0 8424.5 8384.5 12587.5 12485.0 16815.0 16691.5 19689.0 18878.5 22384.5 22292.5 26109.0 25181.018.................................... ....... ....... 6322.5 6271.5 8425.0 8385.0 12588.0 12485.5 16815.5 16992.0 19689.5 18879.0 22385.0 22293.0 26109.5 25181.519.................................... ....... ....... 6323.0 6272.0 8425.5 8385.5 12588.5 12486.0 16816.0 16692.5 19690.0 18879.5 22385.5 22293.5 26110.0 25182.020.................................... ....... ....... 6323.5 6272.5 8426.0 8386.0 12589.0 12486.5 16816.5 16693.0 19690.5 18880.0 22386.0 22294.0 26110.5 25182.521.................................... ....... ....... 6324.0 6273.0 8426.5 8386.5 12589.5 12487.0 16817.0 16693.5 19691.0 18880.5 22386.5 22294.522.................................... ....... ....... 6324.5 6273.5 8427.0 8387.0 12590.0 12487.5 16817.5 16694.0 19691.5 18881.0 22387.0 22295.023.................................... ....... ....... 6325.0 6274.0 8427.5 8387.5 12590.5 12488.0 16818.0 16694.5 ........ ........ 22387.5 22295.524.................................... ....... ....... 6325.5 6274.5 8428.0 8388.0 12591.0 12488.5 ........ ........ ........ ........ 22388.0 22296.025.................................... ....... ....... 6326.0 6275.0 8428.5 8388.5 12591.5 12489.0 16818.5 16695.5 ........ ........ 22388.5 22296.526.................................... ....... ....... 6326.5 6275.5 8429.0 8389.0 12592.0 12489.5 16819.0 16696.0 ........ ........ 22389.0 22297.027.................................... ....... ....... 6327.0 6281.0 8429.5 8389.5 12592.5 12490.0 16819.5 16696.5 ........ ........ 22389.5 22297.528.................................... ....... ....... 6327.5 6281.5 8430.0 8390.0 12593.0 12490.5 16820.0 16697.0 ........ ........ 22390.0 22298.029.................................... ....... ....... 6328.0 6282.0 8430.5 8390.5 12593.5 12491.0 16820.5 16697.5 ........ ........ 22390.5 22298.530.................................... ....... ....... ....... ....... 8431.0 8391.0 12594.0 12491.5 16821.0 16698.0 ........ ........ 22391.0 22299.031.................................... ....... ....... ....... ....... 8431.5 8391.5 12594.5 12492.0 16821.5 16698.5 ........ ........ 22391.5 22299.532.................................... ....... ....... ....... ....... 8432.0 8392.0 12595.0 12492.5 16822.0 16699.0 ........ ........ 22392.0 22300.033.................................... ....... ....... ....... ....... 8432.5 8392.5 12595.5 12493.0 16822.5 16699.5 ........ ........ 22392.5 22300.534.................................... ....... ....... ....... ....... 8433.0 8393.0 12596.0 12493.5 16823.0 16700.0 ........ ........ 22393.0 22301.035.................................... ....... ....... ....... ....... ....... ....... 12596.5 12494.0 16823.5 16700.5 ........ ........ 22393.5 22301.536.................................... ....... ....... ....... ....... ....... ....... 12597.0 12494.5 16824.0 16701.0 ........ ........ 22394.0 22302.037.................................... ....... ....... ....... ....... ....... ....... 12597.5 12495.0 16824.5 16701.5 ........ ........ 22394.5 22302.538.................................... ....... ....... ....... ....... ....... ....... 12598.0 12495.5 16825.0 16702.0 ........ ........ 22395.0 22303.039.................................... ....... ....... ....... ....... ....... ....... 12598.5 12496.0 16825.5 16702.5 ........ ........ 22395.5 22303.540.................................... ....... ....... ....... ....... ....... ....... 12599.0 12496.5 16826.0 16703.0 ........ ........ 22396.0 22304.041.................................... ....... ....... ....... ....... ....... ....... 12599.5 12497.0 16826.5 16703.5 ........ ........ 22396.5 22304.542.................................... ....... ....... ....... ....... ....... ....... 12600.0 12497.5 16827.0 16704.0 ........ ........ 22397.0 22305.043.................................... ....... ....... ....... ....... ....... ....... 12600.5 12498.0 16827.5 16704.5 ........ ........ 22397.5 22305.544.................................... ....... ....... ....... ....... ....... ....... 12601.0 12498.5 16828.0 16705.0 ........ ........ 22398.0 22306.045.................................... ....... ....... ....... ....... ....... ....... 12601.5 12499.0 16828.5 16705.5 ........ ........ 22398.5 22306.5

46.................................... ....... ....... ....... ....... ....... ....... 12602.0 12499.5 16829.0 16706.0 ........ ........ 22399.0 22307.047.................................... ....... ....... ....... ....... ....... ....... 12602.5 12500.0 16829.5 16706.5 ........ ........ 22399.5 22307.548.................................... ....... ....... ....... ....... ....... ....... 12603.0 12500.5 16830.0 16707.0 ........ ........ 22400.0 22308.049.................................... ....... ....... ....... ....... ....... ....... 12603.5 12501.0 16830.5 16707.5 ........ ........ 22400.5 22308.550.................................... ....... ....... ....... ....... ....... ....... 12604.0 12501.5 16831.0 16708.0 ........ ........ 22401.0 22309.051.................................... ....... ....... ....... ....... ....... ....... 12604.5 12502.0 16831.5 16708.5 ........ ........ 22401.5 22309.552.................................... ....... ....... ....... ....... ....... ....... 12605.0 12502.5 16832.0 16709.0 ........ ........ 22402.0 22310.053.................................... ....... ....... ....... ....... ....... ....... 12605.5 12503.0 16832.5 16709.5 ........ ........ 22402.5 22310.554.................................... ....... ....... ....... ....... ....... ....... 12606.0 12503.5 16833.0 16710.0 ........ ........ 22403.0 22311.055.................................... ....... ....... ....... ....... ....... ....... 12606.5 12504.0 16833.5 16710.5 ........ ........ 22403.5 22311.556.................................... ....... ....... ....... ....... ....... ....... 12607.0 12504.5 16834.0 16711.0 ........ ........ 22404.0 22312.057.................................... ....... ....... ....... ....... ....... ....... 12607.5 12505.0 16834.5 16711.5 ........ ........ 22404.5 22312.558.................................... ....... ....... ....... ....... ....... ....... 12608.0 12505.5 16835.0 16712.0 ........ ........ 22405.0 22313.059.................................... ....... ....... ....... ....... ....... ....... 12608.5 12506.0 16835.5 16712.5 ........ ........ 22405.5 22313.560.................................... ....... ....... ....... ....... ....... ....... 12609.0 12506.5 16836.0 16713.0 ........ ........ 22406.0 22314.061.................................... ....... ....... ....... ....... ....... ....... 12609.5 12507.0 16836.5 16713.5 ........ ........ 22406.5 22314.562.................................... ....... ....... ....... ....... ....... ....... 12610.0 12507.5 16837.0 16714.0 ........ ........ 22407.0 22315.063.................................... ....... ....... ....... ....... ....... ....... 12610.5 12508.0 16837.5 16714.5 ........ ........ 22407.5 22315.564.................................... ....... ....... ....... ....... ....... ....... 12611.0 12508.5 16838.0 16715.0 ........ ........ 22408.0 22316.065.................................... ....... ....... ....... ....... ....... ....... 12611.5 12509.0 16838.5 16715.5 ........ ........ 22408.5 22316.566.................................... ....... ....... ....... ....... ....... ....... 12612.0 12509.5 16839.0 16716.0 ........ ........ 22409.0 22317.067.................................... ....... ....... ....... ....... ....... ....... 12612.5 12510.0 16839.5 16716.5 ........ ........ 22409.5 22317.568.................................... ....... ....... ....... ....... ....... ....... 12613.0 12510.5 16400.0 16717.0 ........ ........ 22410.0 22318.069.................................... ....... ....... ....... ....... ....... ....... 12613.5 12511.0 16400.5 16717.5 ........ ........ 22410.5 22318.570.................................... ....... ....... ....... ....... ....... ....... 12614.0 12511.5 16411.0 16718.0 ........ ........ 22411.0 22319.071.................................... ....... ....... ....... ....... ....... ....... 12614.5 12512.0 16841.5 16718.5 ........ ........ 22411.5 22319.572.................................... ....... ....... ....... ....... ....... ....... 12615.0 12512.5 16842.0 16719.0 ........ ........ 22412.0 22320.073.................................... ....... ....... ....... ....... ....... ....... 12615.5 12513.0 16842.5 16719.5 ........ ........ 22412.5 22320.574.................................... ....... ....... ....... ....... ....... ....... 12616.0 12513.5 16843.0 16720.0 ........ ........ 22413.0 22321.075.................................... ....... ....... ....... ....... ....... ....... 12616.5 12514.0 16843.5 16720.5 ........ ........ 22413.5 22321.576.................................... ....... ....... ....... ....... ....... ....... 12617.0 12514.5 16844.0 16721.0 ........ ........ 22414.0 22322.077.................................... ....... ....... ....... ....... ....... ....... 12617.5 12515.0 16844.5 16721.5 ........ ........ 22414.5 22322.578.................................... ....... ....... ....... ....... ....... ....... 12618.0 12515.5 16845.0 16722.0 ........ ........ 22415.0 22323.079.................................... ....... ....... ....... ....... ....... ....... 12618.5 12516.0 16845.5 16722.5 ........ ........ 22415.5 22323.580.................................... ....... ....... ....... ....... ....... ....... 12619.0 12516.5 16846.0 16723.0 ........ ........ 22416.0 22324.081.................................... ....... ....... ....... ....... ....... ....... 12619.5 12517.0 16846.5 16723.5 ........ ........ 22416.5 22324.582.................................... ....... ....... ....... ....... ....... ....... 12620.0 12517.5 16847.0 16724.0 ........ ........ 22417.0 22325.083.................................... ....... ....... ....... ....... ....... ....... 12620.5 12518.0 16847.5 16724.5 ........ ........ 22417.5 22325.584.................................... ....... ....... ....... ....... ....... ....... 12621.0 12518.5 16848.0 16725.0 ........ ........ 22418.0 22326.085.................................... ....... ....... ....... ....... ....... ....... 12621.5 12519.0 16848.5 16725.5 ........ ........ 22418.5 22326.586.................................... ....... ....... ....... ....... ....... ....... 12622.0 12519.5 16849.0 16726.0 ........ ........ 22419.0 22327.087.................................... ....... ....... ....... ....... ....... ....... ........ ........ 16849.5 16726.5 ........ ........ 22419.5 22327.588.................................... ....... ....... ....... ....... ....... ....... 12622.5 12520.5 16850.0 16727.0 ........ ........ 22420.0 22328.089.................................... ....... ....... ....... ....... ....... ....... 12623.0 12521.0 16850.5 16727.5 ........ ........ 22420.5 22328.590.................................... ....... ....... ....... ....... ....... ....... 12623.5 12521.5 16851.0 16728.0 ........ ........ 22421.0 22329.091.................................... ....... ....... ....... ....... ....... ....... 12624.0 12522.0 16851.5 16728.5 ........ ........ 22421.5 22329.592.................................... ....... ....... ....... ....... ....... ....... 12624.5 12522.5 16852.0 16729.0 ........ ........ 22422.0 22330.093.................................... ....... ....... ....... ....... ....... ....... 12625.0 12523.0 16852.5 16729.5 ........ ........ 22422.5 22330.594.................................... ....... ....... ....... ....... ....... ....... 12625.5 12523.5 16853.0 16730.0 ........ ........ 22423.0 22331.095.................................... ....... ....... ....... ....... ....... ....... 12626.0 12524.0 16853.5 16730.5 ........ ........ 22423.5 22331.5

96.................................... ....... ....... ....... ....... ....... ....... 12626.5 12524.5 16854.0 16731.0 ........ ........ 22424.0 22332.097.................................... ....... ....... ....... ....... ....... ....... 12627.0 12525.0 16854.5 16731.5 ........ ........ 22424.5 22332.598.................................... ....... ....... ....... ....... ....... ....... 12627.5 12525.5 16855.0 16732.0 ........ ........ 22425.0 22333.099.................................... ....... ....... ....... ....... ....... ....... 12628.0 12526.0 16855.5 16732.5 ........ ........ 22425.5 22333.5100................................... ....... ....... ....... ....... ....... ....... 12628.5 12526.5 16856.0 16733.0 ........ ........ 22426.0 22334.0101................................... ....... ....... ....... ....... ....... ....... 12629.0 12527.0 16856.5 16733.5 ........ ........ 22426.5 22334.5102................................... ....... ....... ....... ....... ....... ....... 12629.5 12527.5 16857.0 16739.0103................................... ....... ....... ....... ....... ....... ....... 12630.0 12528.0 16857.5 16739.5104................................... ....... ....... ....... ....... ....... ....... 12630.5 12528.5 16858.0 16740.0105................................... ....... ....... ....... ....... ....... ....... 12631.0 12529.0 16858.5 16740.5106................................... ....... ....... ....... ....... ....... ....... 12631.5 12529.5 16859.0 16741.0107................................... ....... ....... ....... ....... ....... ....... 12632.0 12530.0 16859.5 16741.5108................................... ....... ....... ....... ....... ....... ....... ........ ........ 16860.0 16742.0109................................... ....... ....... ....... ....... ....... ....... ........ ........ 16860.5 16742.5110................................... ....... ....... ....... ....... ....... ....... ........ ........ 16861.0 16743.0111................................... ....... ....... ....... ....... ....... ....... ........ ........ 16861.5 16743.5112................................... ....... ....... ....... ....... ....... ....... ........ ........ 16862.0 16744.0113................................... ....... ....... ....... ....... ....... ....... ........ ........ 16862.5 16744.5114................................... ....... ....... ....... ....... ....... ....... ........ ........ 16863.0 16745.0115................................... ....... ....... ....... ....... ....... ....... ........ ........ 16863.5 16745.5116................................... ....... ....... ....... ....... ....... ....... ........ ........ 16864.0 16746.0117................................... ....... ....... ....... ....... ....... ....... ........ ........ 16864.5 16746.5118................................... ....... ....... ....... ....... ....... ....... ........ ........ 16865.0 16747.0119................................... ....... ....... ....... ....... ....... ....... ........ ........ 16865.5 16747.5120................................... ....... ....... ....... ....... ....... ....... ........ ........ 16866.0 16748.0121................................... ....... ....... ....... ....... ....... ....... ........ ........ 16866.5 16748.5122................................... ....... ....... ....... ....... ....... ....... ........ ........ 16867.0 16749.0123................................... ....... ....... ....... ....... ....... ....... ........ ........ 16867.5 16749.5124................................... ....... ....... ....... ....... ....... ....... ........ ........ 16868.0 16750.0125................................... ....... ....... ....... ....... ....... ....... ........ ........ 16868.5 16750.5126................................... ....... ....... ....... ....... ....... ....... ........ ........ 16869.0 16751.0127................................... ....... ....... ....... ....... ....... ....... ........ ........ 16869.5 16751.5128................................... ....... ....... ....... ....... ....... ....... ........ ........ 16870.0 16752.0129................................... ....... ....... ....... ....... ....... ....... ........ ........ 16870.5 16752.5130................................... ....... ....... ....... ....... ....... ....... ........ ........ 16871.0 16753.0131................................... ....... ....... ....... ....... ....... ....... ........ ........ 16871.5 16753.5132................................... ....... ....... ....... ....... ....... ....... ........ ........ 16872.0 16754.0------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

(b) The following table describes the frequencies and Channel Series with F1B, J2B, or J2D emission which are assignable to ship stations for NBDP and data transmissions with other ship stations and public coast stations. Public coast stations may receive only on these frequencies.

Non-Paired NBDP Channels (kHz)----------------------------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------------------------Channel series:1.................................. 4202.5 6300.5 8396.5 12560.0 16785.0 18893.0 22352.0 25193.02.................................. 4203.0 6301.0 8397.0 12560.5 16785.5 18893.5 22352.5 25193.53.................................. 4203.5 6301.5 8397.5 12561.0 16786.0 18894.0 22353.0 25194.04.................................. 4204.0 6302.0 8398.0 12561.5 16786.5 18894.5 22353.5 25194.55.................................. 4204.5 6302.5 8398.5 12562.0 16787.0 18895.0 22354.0 25195.06.................................. 4205.0 6303.0 8399.0 12562.5 16787.5 18895.5 22354.5 25195.57.................................. 4205.5 6303.5 8399.5 12563.0 16788.0 18896.0 22355.0 25196.08.................................. 4206.0 6304.0 8400.0 12563.5 16788.5 18896.5 22355.5 25196.59.................................. 4206.5 6304.5 8400.5 12564.0 16789.0 18897.0 22356.0 25197.010................................. 4207.0 6305.0 8401.0 12564.5 16789.5 18897.5 22356.5 25197.511................................. ....... 6305.5 8401.5 12565.0 16790.0 18898.0 22357.0 25198.012................................. ....... 6306.0 8402.0 12565.5 16790.5 ........ 22357.5 25198.513................................. ....... 6306.5 8402.5 12566.0 16791.0 ........ 22358.0 25199.014................................. ....... 6307.0 8403.0 12566.5 16791.5 ........ 22358.5 25199.515................................. ....... 6307.5 8403.5 12567.0 16792.0 ........ 22359.0 25200.016................................. ....... 6308.0 8404.0 12567.5 16792.5 ........ 22359.5 25200.517................................. ....... 6308.5 8404.5 12568.0 16793.0 ........ 22360.0 25201.018................................. ....... 6309.0 8405.0 12568.5 16793.5 ........ 22360.5 25201.519................................. ....... 6309.5 8405.5 12569.0 16794.0 ........ 22361.0 25202.020................................. ....... 6310.0 8406.0 12569.5 16794.5 ........ 22361.5 25202.521................................. ....... 6310.5 8406.5 12570.0 16795.0 ........ 22362.0 25203.022................................. ....... 6311.0 8407.0 12570.5 16795.5 ........ 22362.5 25203.523................................. ....... 6311.5 8407.5 12571.0 16796.0 ........ 22363.0 25204.024................................. ....... ....... 8408.0 12571.5 16796.5 ........ 22363.5 25204.525................................. ....... ....... 8408.5 12572.0 16797.0 ........ 22364.0 25205.026................................. ....... ....... 8409.0 12572.5 16797.5 ........ 22364.5 25205.527................................. ....... ....... 8409.5 12573.0 16798.0 ........ 22365.0 25206.028................................. ....... ....... 8410.0 12573.5 16798.5 ........ 22365.5 25206.529................................. ....... ....... 8410.5 12574.0 16799.0 ........ 22366.0 25207.030................................. ....... ....... 8411.0 12574.5 16799.5 ........ 22366.5 25207.531................................. ....... ....... 8411.5 12575.0 16800.0 ........ 22367.0 25208.032................................. ....... ....... 8412.0 12575.5 16800.5 ........ 22367.5 ........33................................. ....... ....... 8412.5 12576.0 16801.0 ........ 22368.0 ........34................................. ....... ....... 8413.0 12576.5 16801.5 ........ 22368.5 ........35................................. ....... ....... 8413.5 ........ 16802.0 ........ 22369.0 ........36................................. ....... ....... 8414.0 ........ 16802.5 ........ 22369.5 ........37................................. ....... ....... ....... ........ 16803.0 ........ 22370.0 ........38................................. ....... ....... ....... ........ 16803.5 ........ 22370.5 ........39................................. ....... ....... ....... ........ 16804.0 ........ 22371.0 ........40................................. ....... ....... ....... ........ ........ ........ 22371.5 ........41................................. ....... ....... ....... ........ ........ ........ 22372.0 ........42................................. ....... ....... ....... ........ ........ ........ 22372.5 ........43................................. ....... ....... ....... ........ ........ ........ 22373.0 ........44................................. ....... ....... ....... ........ ........ ........ 22373.5 ........45................................. ....... ....... ....... ........ ........ ........ 22374.0 ........----------------------------------------------------------------------------------------------------------------

(c) Distress and calling. The frequencies 2174.5 kHz, 4177.5 kHz, 6268.0 kHz, 8376.5 kHz, 12520.0 kHz, and 16695.0 kHz may be used for NBDP and data transmissions by coast and ship stations on a simplex basis for distress and safety purposes.

(d) The frequencies in the 156-162 MHz band available for assignment to public coast stations that are contained in Sec. 80.371(c) of this part are also available for radioprinter and data communications between ship and coast stations using F1B, F2B, F1D, or F2D emission. [51 FR 31213, Sept. 2, 1986, as amended at 56 FR 9890, Mar. 8, 1991; 57 FR 43407, Sept. 21, 1992; 58 FR 16504, Mar. 29, 1993; 68 FR 46969, Aug. 7, 2003]