AC 36-1G

Historical

Advisory circular · Noise Levels for U.S. Certificated and Foreign Aircraft

A newer version is currentThis is a historical version. AC 36-1H is the version in force, approved May 25, 2012.
Approved
August 27, 1997
Last reviewed
August 27, 1997
Family
AC 36-1 · 2 versions
Revision
G
14 CFR parts
36

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed November 21, 2025.

Show pages 97–108
Page 109OCROpen in PDF

APPENDIX 5 AIRCRAFT NOISE CERTIFICATION LEVELS IN DESCENDING EPNdB FOR U.S. CERTIFICATED TURBOJET POWERED AIRPLANES *APPROACHE MANUFASTURER MODEL MTOW 1000# MIW 1000# ENGINE MODEL AP ELAPS AP NOISE LEVEL (EPNIB) NOTES BOEING B-737-300 139.50 121.00 CFM56-3 w/HWFA 40 98.6 BOEING B-737-300 139.50 121.00 CFM56-3 w/HWFA 40 97.6 38 BOBING 8-737-300 132.50 121.00 CFM36-3-B1 40 100.1 BOEING B-737-300 139.50 121.00 CFM56-3B-2 40 100.1 BOEING B-737-400 142.50 121.00 CFM56-3-B1 40 100.2 BOEING B-737-400 150.00 124.00 CFMS6-3 w/HWFA 40 98.6 BOEING B-737-400 150.00 124.00 CFM56-3 P//HWFA 40 97.7 38 BOEING B-737-400 150.00 124.00 CFM56-3 w/HIWFA 40 98.6 BOEING B-737-400 142.50 124.00 CFM56-3 w/HWFA 40 97.7 38 BOEING B-737-400 150.00 124.00 CFM56-3 w/HWFA 40 97.7 38 BOEING B-737-400 142.50 124.00 CFM56-3 w/HWFA 40 98.6 BORING B-737-400 150.00 124.00 CFM56-3B-2 40 100.2 BOEING B-737-400 150.00 124.00 CPM56-3C-1 40 100.2 BOEING B-737-500 139.00 114.00 CFM56-3 w/HWFA 40 98.7 BOEING B-737-500 139.00 114.00 CFM56-3 w/HWFA 40 97.6 38 BOEING B-737-500 132.80 114.00 CFM56-3 w/HWFA 40 98.7 BOEING B-737-500 132.80 114.00 CFM56-3 w/HWFA 40 97.6 38 BOEING Đ-737-500 139.00 114.00 CFMS6-3-B1 40 100.0 BOEING B-737-500 132.80 114.00 CFM56-3-B1(R) 40 100.0 BOEING B-747-100 750.00 520.00 STOD -7F 25 104.5 29 Page 7

Page 110OCROpen in PDF

8427197 AC 36-1G APPENDIX 5 AIRCRAFT NOISE CERTIFICATION LEVELS IN DESCENDING EPNEB FOR U.S, CERTIFICATED TURBOJET POWERED AIRPLANES

APPROACH MANUYACTURER MODEL MTOW 1000# MLW 1000M ENGINE MODEL AP FLAPS AP NOISELEVEL (EPNIB) NOTES BOEING B-747-100 710.00 $40.00 ST9D-3A 25 104.6 29 BOEING B-747-100 734.00 540.00 JT9D-7 25 104.1 29 BOEING 8-747-100 734.00 564.00 JT9D-3А 30 107.2 • •• BOFING B-747-100 710.00 $64.00 Л9D-7 30 107.4 - .

BOEING B-747-100 750.00 585.00 IT9D-7A 30 106.9 BOEING B-747-100 750.00 585.00 JT9D-7F 30 107.4 ...

BOEING B-747-100 750.00 585.00 S9D-7FW 30 107.4 ...

BOEING B-747-100 750.00 385.00 JT9D-7WET 30 106.9 BOEING B-747-100 750.00 585.00 RB211-524C2 30 106.5 - ..

BOEING B-747-100 734.00 630.00 IT9D-7A 25 105.5 29 BOEING B-747-200 767.00 564.00 JT9D-3A 30 106.5 BOEING B-747-200 770.00 564.00 JT9D-7 30 106.7 BOEING B-747-200 773.00 585.00 JT9D-3AWET 30 106.7 BOEING B-747-200 833.00 585.00 RB211-524C2 30 107.0 BOEING B-747-200 820.00 630.00 CF6-50E 30 107.0 BOEING B-747-200 $33.00 630.00 CF6-50E2 30 106.5 BOEING B-747-200 710.00 630.00 JT9D-3А 25 105.7 30 BOEING B-747-200 734.00 630.00 JT9D-7 25 105.2 30 BOEING B-747-200 $20.00 630.00 TT9D-70A 30 106.0 BOFING B-747-200 734.00 630.00 IT9D-7A 25 105.0 30 Page 8

Page 111OCROpen in PDF

827/97 AC 36-1G APPENDIX 5 AIRCRAFT NOISE CERTIFICATION LEVELS IN DESCENDING EPNAB FOR U.S. CERTIFICATED TURBOJET POWERED AIRPLANES **APPROACH** MODEL MITOW 1000# MLV 1000# ENGINE MODEL • AP FLAPS AP NOISE LEYEL ERNADI NOTES BOEING B-747-200 785.00 630.00 JT9D-7A 30 107.3 BOEING B-747-200 800.00 630.00 IT9D-7F 30 107.8 BOEING B-747-200 750.00 630.00 JT9D-7F 25 105.0 30 BOEING B-747-200 805.00 630.00 JT9D-7FW 30 107.8 • ..

BOEING B-747-200 $12.00 630.00 JT9D-7FW/-71 30 107.4 • •• BOEING B-747-200 770.00 630.00 J9D-71 25 106.0 30 BOEING B-747-200 $00.00 630.00 IT9D-71 30 107.8 • ..

BOEING B-747-200 $33.00 630.00 ST9D-7Q 25 104.4 BOLING B-747-200 833.00 630.00 JT9D-TR4G2 30 106.6 BOEING B-747-200 785.00 630.00 JT9D-7WET 30 107.3 BOEING B-747-200 820.00 630.00 RB211-524B/B2 30 107.3 BOEING B-747-200 $33.00 630.00 RB211-524D4 30 104.9 BOEING B-747-300 $00.00 630.00 CF6-50E2 30 106.5 BOEING B-747-300 820.00 630.00 JT9D-70A 30 105.3 BOEING B-747-300 $33.00 630.00 JT9D-7R4G2 30 106.6 BOEING B-747-300 $20.00 630.00 RB211-524B2 30 107.3 BOEING B-747-300 833.00 630.00 RB211-524D4 30 104.9 BOEING B-747-300 833.00 666.00 CF6-80C2B1 30 105.2 BOEING B-747-400 600.00 564.00 PW4056 30 103.1 BOEING B-747-400 870.00 652.00 CF6-80C2 25 101.4 Page 9

Page 112OCROpen in PDF

APPENDIX 5 AIRCRAFT NOISE CERTIFICATION LEVELS IN DESCENDING EPNAB FOR U.S. CERTIFICATED TURBOJET POWERED AIRPLANES *APPROACH* MANUFACTURER MODEL MTOW 1000M MLW 1000# ENGINE MODEL AL FLAPS AP NOISE LEVELIEPNABI NOTES HOEING B-747-400 $75.00 652.00 CF6-80C2B1F 30 103.8 BOEING B-747-400 $75.00 652.00 CF6-80C2B1F 30 103.3 W/N1 MOD BORING B-747-400 $75.00 652.00 PW 4056 PH3 30 103.6 (FB2B) BOEING B-747-400 $75.00 652.00 PW4056 PH3 30 103.0 (FB2C) BOEING B-747-400 $75.00 652.00 PW4056 PH3 30 102.1 (FB2C) NR BOEING B-747-400 875.00 652.00 PW4056 PKG A 30 104.7 (FB2T) BOEING 8-747-400 875.00 652.00 PW4056 PKG 30 103.4 B/PHASE 1 BOEING B-747-400 875.00 652.00 RB211-524G 30 103.8 BOEING B-747-400 870.00 652.00 RB211-524H 30 103.8 BOEING B-747-400 $75.00 652.00 RB211-524H2 30 103.8 BOEING B-747-SP 702.00 410.00 RB211-524D4 30 107.0 BOEING B-747-SP 696.00 450.00 RB211-524B2 30 103.2 BOEING B-747-SP 701.00 465.00 JT9D-7A 30 102.9 BOEING B-747-SP 660.00 475.00 JT9D-7F 30 103.8 BOEING B-747-SP 702.00 475.00 JT9D-71 30 103.8 BOEING B-747-SR 571.00 564.00 CF6-45A2 30 . 105.4 BOFING B-747-SR 610.00 564.00 T9D-7A 30 106.9 BOFING B-757-200 255.50 210.00 PW 2037 30 98.1 BOEING B-757-200 255.50 210.00 PW 2040 30 98.1 BOFING B-757-200 255.50 210.00 RB211-535-E4 30 95.2 Pare 10

Page 113OCROpen in PDF

APPENDIX 5 AIRCRAFT NOISE CERTIFICATION LEVELS IN DESCENDING EPNIB FOR U.S. CERTIFICATED TURBOJET POWERED AIRPLANES *APPROACH*** MAUUTACTORER MODEL MTOW 1000# MLW 1000% ENGINE MODEL AP FLAPS AE NOISE LEVEL (EPNJB) NOTES BOEING B-757-200 240.00 210.00 RB211-535C 25 99.6 BOEING B-757-200 255.50 210.00 RB211-535E4-B 30 95.2 BOFING B-767-200 351.00 225.00 PW4052 30 93.2 BOEING B-767-200 360.00 300.00 CF6-80A 30 101.7 BOEING B-767-200 360.00 300.00 CF6-80A2 30 101.7 BOEING B-767-200 351.00 300.00 CF6-80C2-B2 30 96.4 BOEING B-767-200 387.00 300.00 CF6-80C2-B4 30 96.4 BOEING B-767-200 351.00 300.00 JT9D-7R4D(A) 30 102.7 BOEING B-767-200 360.00 300.00 JT9D-7R4D(B) 30 102.6 BOEING B-767-200 360.00 300.00 JT9D-7R4E 30 102.6 BOFING B-767-200 400.00 300.00 PW 4056 30 98.5 BOEING B-767-200/200ER 360.00 300.00 CF6-80C2B2F 30 96.5 BOFING B-767-200/200ER 360.00 300.00 CF6-80C2B4F 30 96.5 BOEING B-767-200/200ER 387.00 300.00 CF6-80C2B4F 30 96.5

W/NI MOD BOEING B-767-200/200ER 400.00 300.00 CF6-80C2B6F 30 96.5 W/N1 MOD BOEING B-767-200/200ER 395.00 300.00 PW4056 PH3 30 96.5 (FB2C) NRI BOEING B-767-200/200ER 387.00 300.00 PW4060 30 98.6 BOEING B-767-200/200ER 395.00 300.00 PW4060 PH3 30 96.6 (FB2C) NRI BOEING B-767-300 288.70 280.00 CF6-80C2B2 30 96.5 BOEING B-767-300 351.00 320.00 CF6-80A 30 101.7 Page 11

Page 114OCROpen in PDF

APPENDIX 5 AIRCRAFT NOISE CERTIFICATION LEVELS IN DESCENDING EPNIB FOR U.S. CERTIFICATED TURBOJET POWERED AIRPLANES

APPROACH MANUFACTURER MODEL MTOW 1000# MLW 1000# ENGINE MODEL AP FLAPS AP NOISE LEVEL (EPNIB) NOTES BOEING B-767-300 351.00 320.00 CF6-80A2 30 101.7 BOEING B-767-300 407.00 320.00 CF6-80C2-B4 30 98.4 BOEING B-767-300 407.00 320.00 CF6-80C2-B6 30 98.4 BOEING B-767-300 407.00 320.00 CF6-80C2B6F 30 98.5 BOEING B-767-300 351 00 320.00 JT9D-7R4E 30 103.0 BOEING B-767-300 407.00 320.00 PW 4056 30 100.2 BOEING B-767-300 407.00 320.00 PW 4060 30 100.2 BOEING B-767-300 407.00 320.00 RB211-524G 30 99.8 BOEING B-767-300 407.00 320.00 RB211-524H 30 99.8 BOEING B-767-300/300ER $12.00 320.00 PW4056 PH3 30 97.6 (FB2C) NRI BOEING B-767-300/300ER 412.00 320.00 PW4060 PH3 30 97.9 (FB2C) NRI BOEING B-767-300/300ER 412.00 320.00 PW4062 (FB2B) 30 100.2 BOEING B-767-300/300ER 412.00 320.00 PW4062 PH3 30 97.9.

(FB2C) NRI BOEING B-777-200 $45.00 445.00 GE90-76B 30 97.6 BOEING B-777-200 545.00 445.00 PW4077 30 99.4 BOEING B-777-200 545.00 445.00 TRENT875 30 . 99.8 BOEING B-777-200 545.00 445.00 TRENT877 30 99.8 BOEING B-777-200 632.50 • 460.00 GE-90-90B 30 97.8 BOEING B-777-200 632.50 460.00 TRENT884 30 99.4 BOEING B-777-200 632.50 460.00 TRENT892 30 99.4 Page 12

Page 115OCROpen in PDF

APPENDIX 5 AIRCRAFT NOISE CERTIFICATION LEVELS IN DESCENDING EPNdB FOR U.S. CERTIFICATED TURBOJET POWERED AIRPLANES ***APPROACH*** MANDLACTURAR MODEL MTOW 1000# MLW 1000# ENGINE MODEL AP FLAPS AP NOISE LEVEL (EPNAB) NOTES CANADAIR CL-600 36.00 33.00 ALF-502 45 91.2 CANADAIR CL-600 40.40 36.00 ALF 502L/L-21-2C 45 91.6 CANADAIR CL-600 41.25 36.00 ALF-502L/L-2/-2C 45 91 6 CANADAIR CL-600 (WINGLETS) 41.25 36.00 ALF-502L/L-2/L-2C 45 91.6 CANADAIR CL-601 43.00 36.00 CF34-1A 45 89.4 CANADAIR CL-601-1A 45.10 36.00 CF-34-1A 45 90.1 CANADAIR CL-601-3A 43.10 36.00 CF-34-3A 45 89.4 CANADAIR CL-601-3A 45.10 36.00 CF-34-3A/-3A2 45 90.1 CANADAIR CL-601-3R 45.10 36.00 CF-34-3A1 45 90.1 CANADAIR CL-604 48.20 38.00 GE CF34-3B 45 90.3 CANADAIR CRJ (CL-600-2B19) 53.00 47.00 CF-34-3A1 45 92.1 CANADAIR CRJ (CL-600-2B19) 53.00 47.00 CF-34-3B1 45 92.1 CESSNA 500 CITATION 10.30 9.90 JT15D-1 40 87.7 CESSNA 500/501 CITATION I 11.80 11.30 JT15D-i/-1A 40. 87.9 CESSNA 525 CESSNA JET 10.40 9.70 FJ44-1A 35 92.1 CESSNA 550 CITATION I 14.10 13.50 IT15D-4 40 90.5 CESSNA 551 CITATION E 12.50 12.00 JT15D-4 40 90.5 CESSNA 552 15.50 14.30 JT1SD-5 35 88.5 CESSNA 560 CITATION V 16.30 15.20 JT15D-SA 35 88.9 CESSNA 650 CITATION III 22.00 20.00 TFF731-3B-100S 37 93.8 22 Page 13

Page 116OCROpen in PDF

APPENDIX 5 AIRCRAFT NOISE CERTIFICATION LEVELS IN DESCENDING EPNdB FOR U.S. CERTIFICATED TURBOJET POWERED AIRPLANES ***APPROACH** MANUFACTURER MODEL MTOW 1000# MLW 1000# ENGINE MODEL AP ELALS AP NOISE LEVEL (EPNJB) NOTES CESSNA 750 CITATION X 35.70 31.80 AE3007C 35 90.2 CESSNA S550 CITATION SAI 15.10 14.40 JT15D-4B 35 86.2 DASSAULT FALCON 10 18.30 17.20 TFE731-2 52 95.3 DASSAULT FALCON 10 19.30 17.64 TFE731-2-1C 52 95.2 DASSAULT FALCON 20-C/D/E 28.60 27.30 CF700-2D-2 40 101.7 DASSAULT FALCON 20-C/D/E/F 28.60 27.30 CF700-2D-2Q 40 99.7 DASSAULT FALCON 20-CS/DS/ES 29.10 27.76 TFE-731-SBR-2C 40 90.7 34 DASSAULT FALCON 20-C5/D5/ES 29.10 27.76 TFE731-5AR-2C 40 90.7 DASSAULT FALCON 20-CS/DS/ES 30.50 28.80 TFE731-5BR-2C 40 90.6 DASSAULT FALCON 20-F 28.60 27.30 CF700-2D-2 40 103.0 DASSAULT FALCON 20-F5 29.10 27.76 TFE-731-SBR-2C 40 90.0 34 DASSAULT FALCON 20-F5 29.10 27.76 TFE731-5AR-2C 40 90.0 DASSAULT FALCON 20-F5 30.50 28.80 TFE731-SBR-2C 40° 90.3 DASSAULT FALCON 20-G 32.00 27.56 ATF3-6-2C 40 95.9 DASSAULT FALCON 200 32.00 28.88 ATF3-64-4C 40 94.2 DASSAULT FALCON 2000 36.50 33.00 CFE738-1-1B 40 93.1 DASSAULT FALCON 50 40.78 35.71 TFE731-3-1C 48 97.1 DASSAULT FALCON 50 40.78 35.71 TFE731-40-1C 40 95.2 DASSAULT FALCON 900 45.50 42.00 TFE731-5AR-1C 40 91.7 DASSAULT FALCON 900B 46.50 42.00 TFE731-5BR-1C 40 91.7 Page 14

Page 117OCROpen in PDF

APPENDIX 5 AIRCRAFT NOISE CERTIFICATION LEVELS IN DESCENDING EPNIB FOR U.S. CERTIFICATED TURBOJET POWERED AIRPLANES *APPROACH* MANDFACTURER MODEL MTOW 1000* MLW 1000# ENGINE MODEL AP FLAPS AP NOISE LEVEL (EPNIB) NOTES FOKKER F100 98.00 88.00 TAY MK650-15 42 93.0 FOKKER F28 MK1000 65.00 59.00 SPEY MK555-15 42 101.2 FOKKER F28 MK2000 65.00 SPEY MK555-15 42 101.8 FOKKER F28 MK3000 71.00 64.00 SPEY MK555-15H 42 99.4 FOKKER F28 MK4000 73.00 65.80 SPEY MK555-15H 42 99.4 FOKKER F28 MK4000 73.00 69.50 SPEY MK555-15P 42 101.4 FOKKER F7O 92.00 81.00 TAY MK620-15 42 88.3 GULFSTREAM G-II GULFSTREAM 65.50 58.50 SPEY 511-8 39 98.4 12 GULFSTREAM G-IB/G-II 69.70 58.50 SPEY 511-8 39 97.3 12 GULFSTREAM G-IV 73.20 58.50 TAY 611-8 39 91.0 GULFSTREAM G-IV GULFSTREAM 71.70 58.50 TAY 610-8 39 91.0 GULFSTREAM G-IV GULFSTREAM w/ASC 190 74.60 66.00 TAY 611-8 39 92.0 GULFSTREAM G-V 90.50 75.30 BR700-710A1-10 39 90.9 ISRAEL AIRCRAFT 1124 WESTWIND 22.90 19.00 TFE731-3-1G 40 93.0 ISRAEL, AIRCRAFT 1124A WESTWIND 2 23.50 19.00 TFE731-3-1G 40 92.8 ISRAEL AIRCRAFT 1125 ASTRA 24.70 20.70 TFE731-3A-200G 40 89.8 ISRAEL AIRCRAFT 1125 ASTRA SPX 24.65 20,70 TFE731-40R 40 92.3 LEARJET 23 Raisbeck MK II 12.50 11.90 CJ610-1/-4 98.0 LEARJET 24 Raisbeck MK II 13.00 11.90 CJ610-1/-4 98.0 LEARJET 24/24D 13.50 11.90 CJ610-6 40 100.7 13 Page 15

Page 118OCROpen in PDF

APPENDIX 5 AIRCRAFT NOISE CERTIFICATION LEVELS IN DESCENDING EPNdB FOR U.S. CERTIFICATED TURBOJET POWERED AIRPLANES **APPROACH*** MANUFACTURER MODEL MTOW 1000# MLW 1000# ENGINE MODEL AP FLAPS AP NOISE LEVEL (EPNdB) NOTES LEARJET 24B/D Raisbeck MK I 13.50 11.88 CI610 40 98.0 LEARJET 24D 13.50 11.90 CJ610-6 40 96.7 LEARJET 24D 13.50 11.90 CJ610-6 40 101.7 14 LEARJET 24E 12.90 11.90 CJ610-6 40 95.3 LEARJET 24F 13.50 11.90 CJ610-6 40 95.3 LEARJET 24F-A 12.50 11.90 CJ610-6 40 95.3 LEARJET 25 16.00 13.30 CJ610-6 10 99.0 LEARJET 25/25B/C Raisb MK II 15.00 13.30 CJ610 40 • 99.0 LEARJET 25B/C/D/F XR Dee Hard 16.30 13.30 CJ610-6/8A 40 99.0 LEARJET 25C 15.00 13.30 CJ610-6 40 100.8 • 13 LEARJET 25D 15.00 13.30 CJ610-6 40 102.7 14 LEARJET 2SD/25F 15.00 13.30 CJ610-6/8A 40 95.2 LEARJET 28/29 15.00 14.30 CJ610-8A 40 101.7 LEARJET 31 16.50 15.30 TFE731-2-3B 40 92.6 LEARJET 35/36 18.00 14.30 TFE731-2-2B 40 92.2 LEARJET 35A 18.00 14.30 TFE731-2-2B 40 91.3 LEARJET 35A/36A 18.30 15.30 1FE731-2-2B 40 91.4 LEARJET 36A 18.30 15.30 TFE731-2-2B 40 91.4 LEAPET 55 21.00 17.00 TFE731-3A-2B 40 90.6 LEARJET 55B 21.50 18.00 TFE731-3A-2B 40 91.0 Page 16

Page 119OCROpen in PDF

APPENDIX 5 AIRCRAFT NOISE CERTIFICATION LEVELS IN DESCENDING EPNAB FOR U.S. CERTIFICATED TURBOJET POWERED AIRPLANES *APPROACH* MANUYACTURER MODEL MTOW 1000# MLW 1000# ENGINE MODEL AF FLAPS AP NOISE LEVEL (EPNdB) NOTES LEARJET 21.50 18.00 TFE731-3AR-2B 40 92.4 LEARJET 60 23.10 19.50 PW305A 40 87.7 LEARJET MSSC 21.50 17.00 TFE731-3AR-3B 40 92.4 LOCKHEED 1329-23 (AIRESEARCH) 43.80 TFE731-3-1E 59 96.9 LOCKHEED 1329-23 A/D/E w/STAR 3 STC 44.25 36.00 TFE731-3-1R 59 96.9 (ST00258SE) LOCKHEED 1329-25 (AIRESEARCH) 44.50 36.00 TFE731-3 96.9 * ..

LOCKHEED 1329-25 w/STAR 3 STC# ST00259SE 44.50 36.00 TFE731-3-1R 59 26.9 LOCKHEED L-1011 430.00 358.00 RB211-22B 42 102.8 5 * LOCKHEED L-1011-1 430.00 358.00 RB211-22B 42 102.8 5 * LOCKHEED L-1011-100 466.00 368.00 RB211-22B 42 102.8 5 - LOCKHEED L-1011-200 466.00 368.00 RB211-524B 33 101.4 5 * LOCKHEED L-1011-500 496.00 368.00 RB211-524B 33 101.5 5 • LOCKHEED L-1011-500 504.00 368.00 RB211-524B3 33 100.2 5 * LOCKHEED L-1011-500 $10.00 368.00 RB211-524B4 33 102.0 LOCKHEED L1011-385-1-14/15 474.00 368.00 RB211-22B 42 102.8 LOCKHEED L1011-385-1-14/15 466.00 368.00 RB211-524B4 42 103.3 MCDONNELL DOUGLAS DC-08-51 (QNC QN) 276.00 199.50 FT3D-ЗB 25 104.2 6,26.** MCDONNELL DOUGLAS DC-08-51 (QNC QN) 276.00 199.50 25 104.5 6.* MCDONNELL DOUGLAS DC-08-51 (QNC QN) 286.00 207.00 IT3D-3B 25 104.6 6,26.** MCDONNELL DOUGLAS DC-08-51 QNC PLS QN 276.00 199.50 35 107.1 6,** Page 17

Page 120OCROpen in PDF

APPENDIX 5 AIRCRAFT NOISE CERTIFICATION LEVELS IN DESCENDING EPNdS FOR U.S. CERTIFICATED TURBOJET POWERED AIRPLANES ***APPROACH*** MANVFACTURER MODEL MTOW 1000# MLW 1000# ENGINE MODEL AP FLAPS AP NOISE LEVEL, (EPNIB) NOTES MCDONNELL. DOUGLAS DC-08-51 QNC PLS QN 276.00 199.50 JT3D-3B 35 107.0 6,26,** MCDONNELL DOUGLAS DC-08-51 QNC PLS ON 276.00 199.50 JT3D-3В 35 107.1 6,** MCDONNELL DOUGLAS DC-08-51 QNC PLS QN 286.00 207.00 JT3D-3В 35 107.1 6,26.** MCDONNELL, DOUGLAS DC:08-51 W/BAC QN 276.00 199.50 JT3D-1 50 107.8 6.0→ MCDONNELL DOUGLAS DC-08-51 W/BAC QN 276.00 199.50 JT3D-3B 50 107.8 6,** MCDONNELL DOUGLAS DC-08-51 W/B.1C QN 286.00 199.50 JT3D-3B 50 107.8 6,** MCDONNELL, DOUGLAS DC-08-52 (QNC QN) 300.00 202.00 25 104.3 6,26.** MCDONNELL. DOUGLAS DC-08-52 (QNC QN) 300.00 202.00 25 104.7 6,** MCDONNELL DOUGLAS DC-08-52 QNC PLS QN 300.00 202.00 35 107.0 5,26,** MCDONNELL DOUGLAS DC-08-52 QNC PLS QN 300.00 202.00 JT3D-3B 35 107.2 6.** MCDONNELL DOUGLAS DC-08-52 W/BAC QN 305.00 201.90 JT3D-3B 50 108.0 6.** MCDONNELL DOUGLAS DC-08-53 (QNC QN) 306.80 207.00 JT3D 25 105.0 6,** MCDONNELL DOUGLAS DC-08-53 (QNC QN) 315.00 207.00 JT3D-3B 35 107.1 6,** MCDONNELL DOUGLAS DC-0B-53 (QNC QN) 309.80 207.00 25 104.6 6,26.°* MCDONNELL DOUGLAS DC-08-53 QNC PLS QN 318.00 207.00 JTD3D-3B 35 107.1 6,26,** MCDONNELL DOUGLAS DC-08-53 W/BAC QN 315.00 203.30 JT3D-3B 50 108.1 6,** MCDONNELL DOUGLAS DC-08-54 W/BAC QN 315.00 240.00 JT3D-3B 50 107.9 6,** MCDONNELL DOUGLAS DC-08-55 (QNC QN) 309.80 217.00 JTЗD-ЗB 25 105.2 6,26.** MCDONNELL DOUGLAS DC-08-55 QNC PLS QN 320.30 217.00 JT3D-3B 35 107.2 6.26.90 MCDONNELL DOUGLAS DC-08-55 W/BAC QN 325.00 240.00 JT3D-3B 35 107.9 6** Page 18