AC 36-1H

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

Approved
May 25, 2012
Last reviewed
May 25, 2012
This change
Change 1 incorporated
Family
AC 36-1 · 2 versions
Revision
H, Change 1 Incorporated
14 CFR parts
36

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

Show pages 336–347
Page 348Open in PDF

APPENDIX 9 MODEL

MANUFACTURER ROBIN DR 400/160 MTOW MLW 1000#

2.31

2.31

MFR, MODEL

ENGINE DATA SHPNO.

AIRCRAFT NOISE DATA FOR FOREIGN CERTIFICATED PROPELLER DRIVEN SMALL AIRPLANES (ICAO ANNEX 16, CHAPTER 6)

RPM MFG, MODEL

PROPELLER BLADESDIAM (IN) PITCHEXH LYCOMING 1 160 2700 SENSENICH 74 DM 65264 74 2 F0 320 D

MDBA PC CDBA NOISE LEVEL (dBA)

72.9 0.3 73.2 NOTES ROBIN DR 400/180

2.43

2.43

LYCOMING 0 360 A 3A 1 180 2600 SENSENICH 76EM855-064 76 2 F

72.2 0.9 73.1 ROBIN DR 400/180R

2.20

2.20

LYCOMING 0-360 A3A 1 180 2700 SENSENICH 76 EM 855058 76 2 F

74.1 -2.5 71.6 ROBIN DR400/120

1.98

1.98

LYCOMING 0 235-L2A 1 116 2700 SENSENICH 72 CKS-6-056 72 2 F

69.6 2.0 71.6 ROBIN HR 100-285

3.09

3.09

CONTINENTAL TIARA 6 285 B 1 285 4000 HOFFMANN 2000TR/MN 79 3 V

74.2 -1.3 72.9 ROBIN R 2112

1.76

1.76

LYCOMING 0 235 L2A 1 112 2600 SENSENICH 72 CK 56-056 72 2 F

67.3 0.2 67.5 ROBIN R 2160

1.76

1.76

LYCOMING 0 320 D 1 160 2600 SENSENICH 74DM65 5264 72 2 F

72.4 -2.6 69.8

SAAB FAIRCHILD MFI-15-200A

4.41 LYCOMING IO-360-A1B6 1 197 HARTZELL HC-2CYK-4BF 74 2 V

73.8 0.7 74.5

SCHEIBE FLUGZEUGBAU SF-25C

1.34 LIMBACH SL-1700-EA 1 48 HOFFMANN HO-11-150B-75L 59 2 F

58.3 -1.0 57.3

SCHEIBE FLUGZEUGBAU SF-27 M-B

0.85 HIRTH-MOT.BAU 171R-4E 1 28 HOFFMANN HO-02-120-50 47 2 F

67.7 0.2 67.9

SCHEMPP-HIRTH CM

1.50 BINDER MOT.BAU WB-2 1 52 HOFFMANN HO-11 158B-70 62 2 F

65.2 1.4 66.6

SCHEMPP-HIRTH NIMBUS-2M

1.32 SCHEMPP-HIRTH SM-1 (O-28280R) 1 50 HOFFMANN HO-11 145-B80 57 2 F

63.6 1.8 65.4 SHORT BROS.

SKYVAN

12.57 AIRESEARCH TPE-331-2-201A 2 715 HARTZELL HC-B3TN-SE/T10282HB 98 3 V

81.9 -4.7 77.2

SLINGSBY ENGINEERING T 67A

1.65 LYCOMING O-235-L2A 1 118 2800 2 HOFFMAN HO14-178-120 70 2 F

70.9 -2.3 68.6 Page 5

Page 349Open in PDF

APPENDIX 9 MODEL

MANUFACTURER SOC.AERONAUT.

JODEL D 140B MTOW MLW 1000#

2.65

MFR, MODEL

ENGINE DATA SHPNO.

AIRCRAFT NOISE DATA FOR FOREIGN CERTIFICATED PROPELLER DRIVEN SMALL AIRPLANES (ICAO ANNEX 16, CHAPTER 6)

RPM MFG, MODEL

PROPELLER BLADESDIAM (IN) PITCHEXH LYCOMING 1 177 SENSENICH 76EM8-0-60 76 2 F0-360-A2A

MDBA PC CDBA NOISE LEVEL (dBA)

74.0 0.2 74.2 NOTES SOCATA 110 ST

1.70 LYCOMING 0-235L-2A 1 110 2600 MCCAULEY 1A 103TCM 6958 69 2 F

67.6 1.0 68.6 SOCATA 150 SV

1.98 LYCOMING 0 326 D2A 1 160 2700 SENSENICH M 74 DM 61 74 2 F

73.8 -2.2 71.6 SOCATA 180 T

2.09

2.09

LYCOMING 0 360 A3A 1 180 2700 SENSENICH 76 EM8 060 76 2 F

73.1 -0.8 72.3 SOCATA 235 E

2.65

2.65

LYCOMING 0 540 B4B5 1 235 2575 HARTZELL HCC2 YK184684 80 2 V

74.3 -0.7 73.6 SOCATA 880 B

1.70

1.70

ROLLS ROYCE 0 200 A 1 100 2750 MCCAULEY 1A 101 DCM/6948 67 2 F

68.8 68.8 SOCATA 893 E

2.31

2.31

LYCOMING 0 360 A3A 1 185 2700 HOFFMANN HO 27 HM/186 135 73 2 F

71.3 71.3 SOCATA TB 10

2.29 LYCOMING 0-360-A1AD 1 180 2700 HARTZELL HC-C2YK-1BF-F7666-A 74 2 V

72.4 -0.9 71.5 SOCATA TB 9

2.34 LYCOMING 0 320 D2A 1 160 2700 SENSENICH 74 DM6 61 74 2 F

71.2 1.3 72.5 SPORTAVIA PUTZ.

ELSTER B

1.54 CONTINENTAL C90-12F 1 88 HOFFMANN HO-14-183 100 72 2 F

66.0 66.0 SPORTAVIA PUTZ.

RF-5

1.43 LIMBACH L2100-EIX 1 71 HOFFMANN HO-VR/L-150A 59 2 V

63.4 -1.3 62.1 SPORTAVIA PUTZ.

RF6-B

1.98 LYCOMING 0-320-A1B 1 150 HOFFMANN HO-23 178-145 70 2 F

71.2 -1.1 70.1 SPORTAVIA PUTZ.

RS-180

2.45 LYCOMING 0-360-A3A 1 180 MCCAULY 1A170/FFA7563 75 2 F

73.8 73.8 SPORTAVIA PUTZ.

RS-180

2.43 LYCOMING 0-360-A3A 1 180 HOFFMANN HO-27-HM-180138 70 2 F

66.8 -0.9 65.9 Page 6

Page 350Open in PDF

APPENDIX 9 MODEL

MANUFACTURER

WASSMER WA 80 MTOW MLW 1000#

1.76

MFR, MODEL

ENGINE DATA SHPNO.

AIRCRAFT NOISE DATA FOR FOREIGN CERTIFICATED PROPELLER DRIVEN SMALL AIRPLANES (ICAO ANNEX 16, CHAPTER 6)

RPM MFG, MODEL

PROPELLER BLADESDIAM (IN) PITCHEXH ROLLS ROYCE 1 134 2700 HOFFMANN HO 14.175.113 69 2 F0 200 A

MDBA PC CDBA NOISE LEVEL (dBA)

68.3 68.3 NOTES

ZAKLADY SZCYBOWCOWE SZD 45

1.54 LIMBACH SL-1700-EC 1 59 HOFFMANN HO-11-145 B75D 57 2 F

68.9 0.3 69.2 Page 7

Page 351Open in PDF

11/15/01 AC36-1H Appendix 9 Exhaust Configurations (Reciprocating Engines) 1 Stub Pipes 2 Small Collector, Short Exhaust Pipe 3 Turbine Or Turbocharger 4 Collector Wraparound Manifold Straight Pipe 5 Manifold Muffler Page 8

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APPENDIX 10 AIRCRAFT NOISE DATA FOR U.S. CERTIFICATED HELICOPTERS (14 CFR PART 36, APPENDIX H) MODEL

MANUFACTURER MGW MLW 1000# MFR, MODEL

ENGINE DATA NO.

MAIN ROTOR MFR, MODEL BLADES DIA(FT.)

TAIL ROTOR MFR, MODEL BLADES DIA(FT.) FO TO AP STAGE NOTES NOISE LEVEL (EPNdB) AGUSTA 6.28 PRATT&WHITNEY 2 AGUSTA 4 36.00 AGUSTA 2 6.60 90.8 91.4 91.4 2 A109E 6.28 206C AGUSTA 6.28 TURBOMECA 2 AGUSTA 4 36.00 AGUSTA 2 6.60 90.9 91.8 93.3 2 A109E 6.28 ARRIUS 2K1 AGUSTA 6.28 TURBOMECA 2 AGUSTA 4 36.00 AGUSTA 2 6.60 89.1 91.7 91.1 2 A109K2 6.28 ARRIEL 1K1 BELL HELI TEXTRON 4.45 ALLISON 1 BELL HELI TEXT 2 37.00 BELL HELI TEXT 2 5.40 85.2 88.4 90.7 2 206L-4 4.45 250-C30P 206-015-001-107 206-016-201-127 BELL HELI TEXTRON 8.40 ALLISON 2 BELL HELI TEXT 2 42.00 BELL HELI TEXT 2 6.83 90.5 89.1 94.2 2 230 FXD SKD GR 8.40 250-C30G/2 222-018-501-101 222-016-001-107 BELL HELI TEXTRON 8.40 ALLISON 2 BELL HELI TEXT 2 42.00 BELL HELI TEXT 2 6.83 90.8 89.1 94.2 2 230 RTR WHL GR 8.40 250-C30G/2 222-018-501-101 222-016-001-107 BELL HELI TEXTRON 11.90 PRATT&WHITNEY 2 BELL HELI TEXT 4 46.00 BELL HELI TEXT 2 8.60 93.4 92.8 95.6 2 412 HP 11.90 PT6T-3E 412-015-300-109 212-010-750-105 BELL HELI TEXTRON 11.90 PRATT&WHITNEY 2 BELL HELI TEXT 4 46.00 BELL HELI TEXT 2 8.60 93.4 93.2 95.6 2 412 SP 11.90 PT6T-3B 412-015-300-109 212-010-750-105 BELL HELI TEXTRON 11.90 PRATT&WHITNEY 2 BELL HELI TEXT 4 46.00 BELL HELI TEXT 2 8.60 93.4 92.8 95.6 2 412EP 11.90 PT6T-3D 412-015-300-109 212-010-750-105 BELL HELI TEXTRON 6.00 PRATT&WHITNEY 2 BELL HELI TEXT 4 37.00 BELL HELI TEXT 2 5.67 89.1 88.0 91.2 2 427 6.00 PW207D 427-015-001-125 427-016-001-109 BELL HELI TEXTRON 6.35 PRATT&WHITNEY 2 BELL HELI TEXT 4 37.00 BELL HELI TEXT 2 5.67 89.0 88.5 91.2 2 427 6.35 PW207D 427-015-001-125 427-016-001-109 BELL HELI TEXTRON 9.00 ALLISON 2 BELL HELI TEXT 4 42.00 BELL HELI TEXT 2 6.90 91.6 92.4 93.8 2 430 9.00 250-C40B 430-015-001-101 222-016-001-111 BOEING 3.35 ALLISON 1 MCDONNELL DOUG 5 27.35 MCDONNELL DOUG 80.2 85.4 87.9 2 MD 520N 3.35 250-C20R/2 369D21102-503 NOTAR EHI 31.50 GE 3 5 61.00 4 13.10 93.1 97.6 99.5 2 EH 101/300/500 31.50 CT7-6A EUROCOPTER 20.20 TURBOMECA 2 4 53.10 4 10.40 93.2 94.2 96.5 2 AS 332L2 20.20 MAKILA 1A2 Page 1

Page 353Open in PDF

APPENDIX 10 AIRCRAFT NOISE DATA FOR U.S. CERTIFICATED HELICOPTERS (14 CFR PART 36, APPENDIX H) MODEL

MANUFACTURER MGW MLW 1000# MFR, MODEL

ENGINE DATA NO.

MAIN ROTOR DIA(FT.)MFR, MODEL BLADES

TAIL ROTOR MFR, MODEL BLADES DIA(FT.) FO TO NOTES NOISE LEVEL (EPNdB)

STAGEAP EUROCOPTER 4.96 TURBOMECA 1 AEROSPATIALE 3 35.07 AEROSPATIALE 2 6.10 87.1 89.8 91.4 2 AS 350 B2 ARRIEL 1D1 355A31.0001 355A12.0031 OR 0040 EUROCOPTER 4.63 TURBOMECA 1 3 35.10 2 6.10 86.8 91.1 91.3 2 AS 350BA 4.63 ARRIEL 1B EUROCOPTER 5.60 TURBOMECA 2 EUROCOPTER 3 35.60 EUROCOPTER 2 6.20 86.2 88.8 92.9 2 AS 355 N 5.40 ARRIUS 1A/4M STARFLEX 355A340004­ 350A33-0008-03/04 EUROCOPTER 5.29 ALLISON 2 3 35.10 2 6.10 87.6 89.0 93.8 2 AS 355F2R 5.29 250-C20F EUROCOPTER 5.60 TURBOMECA 2 3 35.10 2 6.10 86.2 88.8 92.9 2 AS 355N 5.60 ARRIUS 3191M EUROCOPTER 9.37 TURBOMECA 2 4 39.20 11 3.60 91.0 93.3 96.1 2 AS 365N2 9.37 ARRIEL 1C2 EUROCOPTER 7.39 LYCOMING 2 4 36.10 2 6.40 90.8 90.0 96.0 2 BK 117B2 7.39 LTS-101-750B1 EUROCOPTER 7.39 TURBOMECA 2 4 36.10 2 6.40 89.7 90.6 96.0 2 BK 117C1 7.39 ARRIEL 1E2 SIKORSKY 10.80 TURBOMECA 2 SIKORSKY 4 44.00 SIKORSKY 4 8.00 92.8 92.5 95.6 2 S-76A STC:568NE 10.80 ARRIEL 1S 76150-9000/09100 76101-05101-041 SIKORSKY 11.70 TURBOMECA 2 SIKORSKY 4 44.00 SIKORSKY 4 8.00 93.2 96.0 97.7 2 S-76C 11.70 ARRIEL 1S1 76150-09199-41 76101-05501-041 SIKORSKY 11.70 TURBOMECA 2 SIKORSKY 4 44.00 SIKORSKY 4 8.00 91.6 93.9 96.1 2 S-76C+ (PLUS) 11.70 ARRIEL 2S1 76150-09100-41 76101-05501-041 Page 2

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11/15/01 AC36-1H Appendix 10

EQUATIONS FOR THE CALCULATION OF NOISE CERTIFICATION LIMITS

AT TAKEOFF, SIDELINE, AND APPROACH STAGE 2 Takeoff Limits Flyover Limits Approach Limits (EPNdB) (EPNdB) (EPNdB) Up to and including 1,764 pounds 89 88 90 W W Wlog log log1 764 89 + 301 , 88 + 3 01.. {{{{{{ 1 764 ,

log 2 1 764 ,

log 2 { { {{ { { 3 01 {{ . {{ { { Between 1,764 pounds and 176,370 pounds 90 + log 2 { { { { { { 176,370 pounds or more 109 108 110 Page 3

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11/15/01 AC36-1H

Appendix 10

NOISE CERTIFICATION REQUIREMENTS - HELICOPTERS

TAKEOFF 109 85 90 95 100 105 110 115 EPNL Stage 2 89 1 10 100 1000

Takeoff Weight (1,000 lbs) Page 4

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11/15/01 AC36-1H

Appendix 10

NOISE CERTIFICATION REQUIREMENTS - HELICOPTERS

SIDELINE 108 85 90 95 100 105 110 115 EPNL 88 Stage 2 1 10 100 1000

Takeoff Weight (1,000 lbs) Page 5

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11/15/01 AC36-1H

Appendix 10

NOISE CERTIFICATION REQUIREMENTS - HELICOPTERS

APPROACH 110 85 90 95 100 105 110 115 EPNL Stage 2 1 10 100 1000

Takeoff Weight (1,000 lbs) Page 6

Page 358Open in PDF

APPENDIX 11 AIRCRAFT NOISE DATA FOR U.S. CERTIFICATED HELICOPTERS (14 CFR PART 36, APPENDIX J)

MANUFACTURER MGW MLW

ENGINE DATA MAIN ROTOR TAIL ROTOR NOISE LEVEL (SEL) MODEL 1000# MFR, MODEL NO. MFR, MODEL BLADES DIA(FT.) MFR, MODEL BLADES DIA(FT.) FO STAGE NOTES AGUSTA 6.00 PRATT & WHITNEY 1 AGUSTA 4 35.50 AGUSTA 2 6.60 85.9 2 A119 6.00 PT6B-37 BELL HELI TEXTRON 4.55 ALLISON 2 BELL HELI TEXT 2 37.00 BELL HELI TEXT 2 5.40 85.2 2 206L-4 w/STC00036SE 4.55 250-C20R 206-015-001-107 206-016-201-127 BELL HELI TEXTRON 5.00 ALLISON 1 BELL HELI TEXT 4 35.00 BELL HELI TEXT 2 5.40 85.1 2 407 5.00 250-C47B 407-015-001-101 406-016-100-101 BOEING 4.10 ALLISON 1 6 27.50 13 79.0 2 MD 600N 250-C47 BOEING 6.00 PRATT & WHITNEY 2 MCDONNELL DOUGLA 5 33.85 MCDONNELL DOUGLA 13 1.83 82.1 2 MD 900 6.00 PW206A NOTAR ENSTROM 2.60 LYCOMING 1 ENSTROM 3 32.00 ENSTROM 2 4.70 79.0 2 280FX/F-28F 2.60 H10-360-F1AD 28-14003-6 28-150079-5 ENSTROM 2.85 ALLISON 1 ENSTROM 3 32.00 ENSTROM 2 5.00 83.6 2 6 480 2.85 250-C20W 4143000-3 28-150079-7 ENSTROM 3.00 ALLISON 1 ENSTROM 3 32.00 ENSTROM 2 5.00 83.7 2 480B 3.00 250-C20W 4143000-3 28-150079-7 ENSTROM 2.85 ALLISON 1 ENSTROM 3 32.00 ENSTROM 2 5.00 82.4 2 TH28/480 2.85 250-C20W 4143000-1 28-150073-3 EUROCOPTER 3.70 PRATT & WHITNEY 1 4 32.80 8 78.7 2 EC 120 PT6B-37 EUROCOPTER 5.80 PRATT & WHITNEY 2 4 33.50 81.6 2 EC135P PW206B EUROCOPTER 5.80 TURBOMECA 2 4 33.50 80.2 2 EC135T ARRIUS 2B KAMAN 6.00 TEXTRON LYCOMING 1 KAMAN 2 48.20 82.5 2 4 K-1200 6.00 T5317A-1 K-1200(2)2 Rotors ROBINSON 2.40 LYCOMING 1 ROBINSON 2 33.00 ROBINSON 2 4.83 81.9 2 R44 2.40 O-540-F1B5 C016-2 C029-1 SCHWEIZER 2.05 LYCOMING 1 SCHWEIZER 3 26.83 SCHWEIZER 2 4.25 78.8 2 1 269C 2.05 IO-360-D1A 269A1002 269A6034-19 Page 1

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APPENDIX 11 AIRCRAFT NOISE DATA FOR U.S. CERTIFICATED HELICOPTERS (14 CFR PART 36, APPENDIX J)

MANUFACTURER MGW MLW

ENGINE DATA MAIN ROTOR TAIL ROTOR NOISE LEVEL (SEL) MODEL 1000# MFR, MODEL NO. MFR, MODEL BLADES DIA(FT.) MFR, MODEL BLADES DIA(FT.) FO STAGE NOTES SCHWEIZER 2.05 LYCOMING 1 SCHWEIZER 3 26.83 SCHWEIZER 2 4.25 81.1 2 2 269C 2.05 IO-360-D1A 269A1002 269A6034-19 SCHWEIZER 2.05 LYCOMING 1 SCHWEIZER 3 26.83 SCHWEIZER 2 4.25 79.2 2 3 269C 2.05 IO-360-D1A 269A1002 269A6034-19 SCHWEIZER 1.75 LYCOMING 1 SCHWEIZER 3 26.83 SCHWEIZER 2 4.25 81.8 2 5 269C-1 1.75 O-360-C1A 269A1002 269A6034-19 SCHWEIZER 2.26 ALLISON 1 SCHWEIZER 3 27.26 SCHWEIZER 2 4.25 80.6 2 269D (330SP) 2.26 250-C20W 269A1002-11 269A6034-29 SCHWEIZER 2.55 ALLISON 1 SCHWEIZER 3 27.51 SCHWEIZER 2 4.25 81.5 2 269D Configuration A 2.55 250-C20W 269A1002-13 269A6034-29 SCHWEIZER 2.20 ALLISON 1 SCHWEIZER 3 26.83 SCHWEIZER 2 4.25 79.4 2 269D/330 2.20 250-220W 269 A 1002 269 A 6034-19 SCHWEIZER 2.05 LYCOMING 1 3 26.80 2 4.30 78.8 2 1 300C(1) H10-360-DIA SCHWEIZER 2.05 LYCOMING 1 3 26.80 2 4.30 81.1 2 2 300C(2) H10-360-DIA SCHWEIZER 2.05 LYCOMING 1 3 26.80 2 4.30 79.2 2 3 300C(3) H10-360-DIA Page 2