AC 29-2C

Change 9

Advisory circular · Certification of Transport Category Rotorcraft

Approved
June 23, 2023
Last reviewed
June 29, 2023
Family
AC 29-2 · 13 versions
Revision
C, Change 9
14 CFR parts
29

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed October 23, 2026.

Show pages 1–4
Page 5OCROpen in PDF

Advisory U.S. Department Circular of Transportation Federal Aviation Administration Subject: CERTIFICATION OF TRANSPORT Date: 7/25/2014 AC No: 29-2C CATEGORY ROTORCRAFT Initiated by: ASW-110 Change: 6

1. PURPOSE.

a. This Advisory Circular (AC) change publishes the new guidance on automatic flight guidance and control systems (AFGCS) installation in part 29 rotorcraft.

b. This AC does not change regulatory requirements and does not authorize changes in, or deviations from, regulatory requirements. This AC establishes an acceptable means, but not the only means, of compliance. Since the guidance material presented in this AC is not regulatory, terms having a mandatory definition, such as "shall" and "must," etc., as used in this AC, apply either to the reiteration of a regulation itself, or to an applicant who chooses to follow a prescribed method of compliance without deviation.

2. PRINCIPAL CHANGES. This change adds the miscellaneous guidance section 23 (MG

23), Automatic Flight Guidance and Control Systems (AFGCS) Installation in Part 29 Rotorcraft., to the AC.

3. WEBSITE AVAILABILITY. To access this AC electronically, go to the Advisory Circulars library at http://www.faa.gov/regulations_policies/advisory circulars/.

Is/ Lance T. Gant, for Kim Smith Manager, Rotorcraft Directorate, Aircraft Certification Service

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Advisory U.S. Department of Transportation Circular Federal Aviation Administration Subject: CERTIFICATION OF TRANSPORT Date: 6/13/2014 AC No: 29-2C CATEGORY ROTORCRAFT Initiated by: ASW-110 Change: 5

1. PURPOSE.

a. This Advisory Circular (AC) change publishes the new guidance on analyzing an advanced flight controls (AdFC) system installation in transport category rotorcraft.

b. This AC does not change regulatory requirements and does not authorize changes in, or deviations from, regulatory requirements. This AC establishes an acceptable means, but not the only means, of compliance. Since the guidance material presented in this AC is not regulatory, terms having a mandatory definition, such as "shall" and "must," etc., as used in this AC, apply either to the reiteration of a regulation itself, or to an applicant who chooses to follow a prescribed method of compliance without deviation.

2. PRINCIPAL CHANGES. This change adds the miscellaneous guidance section 17 (MG 17), Guidance on Analyzing an Advanced Flight Controls (AdFC) System, to the AC.

3. WEBSITE AVAILABILITY. To access this AC electronically, go to the Advisory Circulars library at http://www.faa.gov/regulations policies/advisory circulars/.

/s/ Kim Smith Kim Smith Manager, Rotorcraft Directorate, Aircraft Certification Service

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Advisory U.S. Department of Transportation Circular Federal Aviation Administration Subject: CERTIFICATION OF TRANSPORT Date: 5/1/2014 AC No: 29-2C CATEGORY ROTORCRAFT Initiated by: ASW-110 Change: 4

1. PURPOSE.

a. This Advisory Circular (AC) publishes needed changes to the existing AC material.

Additionally, there is incorporation of previously approved AC material and non-technical editorial changes to various sections.

b. The change number and the date of the changed material are shown at the top of each page. The vertical lines in the outside margin indicate the beginning and end of each change.

Pages that have different page numbers, but no text changes, will retain the previous heading information.

c. This AC does not change regulatory requirements and does not authorize changes in, or deviations from, regulatory requirements. This AC establishes an acceptable means, but not the only means, of compliance. Since the guidance material presented in this AC is not regulatory, terms having a mandatory definition, such as "shall" and "must," etc., as used in this AC, apply either to the reiteration of a regulation itself, or to an applicant who chooses to follow a prescribed method of compliance without deviation.

2. PRINCIPAL CHANGES.

a. The AC sections previously approved on September 17, 2009 and posted separately to the Regulatory and Guidance Library (RGL), which are related to the Rotorcraft Performance and Handling Qualities rulemaking, are incorporated in this change 4. Those AC sections that were added or changed are: 29.25A, 29.49, 29.143A, 29.173A, 29.175A, 29.177A, 29.1587B, and 29 Appendix B.

b. The changed AC 29 Miscellaneous Guidance (MG) 5 section (Agricultural Dispensing Equipment Installation), previously approved on December 15, 2009 and posted separately to the Regulatory and Guidance Library (RGL), is incorporated in this change 4.

c. The AC 29.573 section previously approved on December 1, 2011 and posted separately to the Regulatory and Guidance Library (RGL), which is related to the Damage Tolerance and

AC 29-2C, Chg 4 5/1/2014 Fatigue Evaluation of Composite Rotorcraft Structures rulemaking, is incorporated in this change 4.

d. The AC 29.571B section previous approved on December 2, 2011 and posted separately to the Regulatory and Guidance Library (RGL), which is related to the Fatigue tolerance Evaluation of Metallic Structure rulemaking, is incorporated in this change 4.

e. The changed AC 29.972 and 29.927A sections (Additional Tests for Rotor Drive Systems), previously approved on July 6, 2012 and posted separately to the Regulatory and Guidance Library (RGL), are incorporated in this change 4.

f. The changed AC 29 MG 6 section (Emergency Medical Service (EMS) Systems Installations Including: Interior Arrangements, Equipment, Helicopter Terrain Awareness and Warning System (HTAWS), Radio Altimeter, and Flight Data Monitoring System), previously approved on February 27, 2014, is incorporated in this change 4.

g. The changed AC 29 MG 18 section on (Helicopter Terrain Awareness and Warning System (HTAWS)), previously approved on February 27, 2014, is incorporated in this change 4.

h. This change 4 also includes changes, edits, and additions for these AC sections: 29.29,

29.45, 29.49, 29.79, 29.141, 29.143, 29.151, 29.251, 29.337, 29.561, 29.562, 29.563A, 29.571A,

29.603, 29.610, 29.625, 29.801, 29.855A, 29.863, 29.865, 29.865B, 29.871, 29.903B, 29.923B,

29.939, 29.1011, 29.1093, 29.1093A, 29.1193, 29.1309, 29.1316, 29.1317, 29.1329, 29.1333,

29.1337, 29.1351, 29.1357, 29.1401, 29.1411, 29.1435. 29.1501, 29.1527, 29.1541, 29.1543,

29.1549, 29.1583, 29 MG 1, 29 MG 2, 29 MG 4, 29 MG 8, 29 MG 13, 29 MG 18, 29 MG 22, and 29 Appendix A.

3. WEBSITE AVAILABILITY. To access this AC electronically, go to the Advisory Circulars library at http://www.faa.gov/regulations_policies/advisory_circulars/.

/s/ Lance T. Gant, for Kim Smith Manager, Rotorcraft Directorate, Aircraft Certification Service 2

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Advisory U.S. Department Circular of Transportation Federal Aviation Administration Subject: CERTIFICATION OF TRANSPORT Date: 9/30/2008 AC No:29-2C CATEGORY ROTORCRAFT Initiated by: ASW-110 Change: 3

1. PURPOSE.

a. This Advisory Circular (AC) publishes needed changes to the existing AC material as a result of a safety-focused study.

b. This change revises existing material in 9 sections.

The change number and the date of the changed material are shown at the top of each page. The vertical lines in the right or left margin indicates the beginning and end of each change. Pages that have different page numbers, but no text changes, will retain the previous heading information.

d. This AC does not change regulatory requirements and does not authorize changes in, or deviations from, regulatory requirements. This AC establishes an acceptable means, but not the only means, of compliance. Since the guidance material presented in this AC is not regulatory, terms having a mandatory definition, such as "shall" and "must," etc., as used in this AC, apply either to the reiteration of a regulation itself, or to an applicant who chooses to follow a prescribed method of compliance without deviation.

2. PRINCIPAL CHANGES. Sections 29.571, 29.679, 29.695, 29.783, 29.901A, 29.917A,

29.1307, 29.1351, and 29.1431 are revised.

3. WEBSITE AVAILABILITY. To access this AC electronically, log on to http://www.airweb.faa.gov/rgl and then click on AC's.

AC 29-2C, Chg 3 9/30/2008 AC 29-2C, Chg 3

PAGE CONTROL CHART Remove Pages Dated Insert Pages Dated vii thru x...........................2/12/03 & 4/25/06 xiii & xiv.......................... 2/12/03 & 4/25/06 C-93 thru C-96 ................. 9/30/99 & 2/12/03 D-41 thru D-44................. 9/30/99 & 4/25/06 D-47 & D-48 ..................................... 9/30/99 D-79 thru D-82.................................. 9/30/99 E-7 & E-8.......................................... 9/30/99 E-35 thru 38 ..................... 9/30/99 & 4/25/06 F-11 & F-12 ..................... 9/30/99 & 2/12/03 F-65 & F-66 ...................................... 9/30/99 F-113 thru F-116 ............................... 9/30/99 vii thru x .............2/12/03, 4/25/06, & 9/30/08 xiii thru xiv ......................................... 9/30/08 C-93 thru C-96 ................... 2/12/03 & 9/30/08 D-41 thru D-44 ................................... 9/30/08 D-47 thru D-48 .................. 9/30/99 & 9/30/08 D-79 thru D-82 ................................... 9/30/08 E-7 & E-8 .......................... 9/30/99 & 9/30/08 E-35 thru E-38 ................... 9/30/99 & 9/30/08 F-11 & F-12........................................ 9/30/08 F-65 thru F-66.2 ................................. 9/30/08 F-113 thru F-116 ............... 9/30/99 & 9/30/08 Signed by Scott A. Horn for Mark R. Schilling Acting Manager, Rotorcraft Directorate Aircraft Certification Service Page 

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Advisory U.S. Department Circular of Transportation Federal Aviation Administration Subject: CERTIFICATION OF TRANSPORT Date: 4/25/06 AC No: 29-2C CATEGORY ROTORCRAFT Initiated ASW-110 Change: Chg 2

4. PURPOSE.

a. This change incorporates all the previously revised AC paragraphs that were posted as accepted and finalized AC material on the FAA RGL website since 2/12/03.

b. This change revises existing material in 25 paragraphs and adds new material for one paragraph.

c. The change number and the date of the changed material are shown at the top of each page that contains changed text. The vertical lines in the right and left margins indicate the beginning and end of each change. Pages that have different page numbers but no text changes will retain the previous heading information.

d. This AC does not change regulatory requirements and does not authorize changes in, or deviations from, regulatory requirements. This AC establishes an acceptable means, but not the only means, of compliance. Since the guidance material presented in this AC is not regulatory, terms having a mandatory definition, such as "shall" and "must," etc., as used in this AC, apply either to the reiteration of a regulation itself, or to an applicant who chooses to follow a prescribed method of compliance without

5. PRINCIPAL CHANGES.

a. Paragraphs 29.45, 29.59A, 29.75A, 29.337, 29.351B, 29.547A, 29.602, 29.631, 29.672, 29.683,

29.777, 29.917A, 29.1321, 29.1333, 29.1351, 29.1585, MG 1, MG 4, MG 8, MG16, Appendix A, and Appendix B are revised.

b. The AC material in paragraphs 29.801 and 29.1411 has been revised.

c. The AC material in MG 12 has been revised and is now contained in AC 29.865B, Subpart D.

d. New paragraph MG 18, Helicopter Terrain Awareness Warning System (HTAWS), is added to Chapter 3.

e. New figures AC 29.351A-1, 29.351B-1, 29.351B-2, and 29.865B-1 are added in Chapter 2.

f. New figures AC 29 MG 8-1, 8-2, 8-3, 8-4, 18-1, 18-2, and 18-2.1 are added in Chapter 3.

WEBSITE AVAILABILITY. To access this AC electronically, log on to http://www.airweb.faa.gov/rgl and then click on AC's.

AC 29-2C, Chg 2 4/25/06 AC 29-2C, Chg 2

PAGE CONTROL CHART Remove Pages Dated Insert Pages Dated iii thru x…………………….9/30/99 & 2/12/03 xiii thru xxiv……………….9/30/99 & 2/12/03 B-11 thru B-20 ………………………..9/30/99 B-49 thru B-125………………………..9/30/99 C-5 thru C-6 ………………………..9/30/99 C-13 thru C-96 …………….9/30/99 & 2/12/03 D-1 thru D-159 …………….9/30/99 & 2/12/03 E-37 thru E-48 ………………………..9/30/99 F-43 thru F-44 .. ………………………..9/30/99 F-61 thru F-120 …………….9/30/99 & 2/12/03 G-45 thru G-52 ………………………..9/30/99 MG 1-15 thru MG 1-17………………..9/30/99 MG 4-9 thru MG 4-13…………………9/30/99 MG 8-1 thru MG 8-15……...9/30/99 & 2/12/03 MG 12-1 thru MG 12-44…...9/30/99 & 2/12/03 MG 16-1 thru MG 16-16………………2/12/03 none none Apdx A-47 thru Apdx A-70……………2/12/03 Apdx B-11 thru Apdx B-20...9/30/99 & 2/12/03 iii thru x...............................................4/25/06 xiii thru xxv......................................... 4/25/06 B-11 thru B-20 .................................... 4/25/06 B-49 thru B-127 .................................. 4/25/06 C-5 thru C-6 ........................................ 4/25/06 C-13 thru C-98 .................................... 4/25/06 D-1 thru D-185 .................................... 4/25/06 E-37 thru E-48 .................................... 4/25/06 F-43 thru F-44 ..................................... 4/25/06 F-61 thru F-123 ................................... 4/25/06 G-45 thru G-52 .................................... 4/25/06 MG 1-15 thru MG 1-16 ...................... 4/25/06 MG 4-9 thru MG 4-13 ........................ 4/25/06 MG 8-1 thru MG 8-31 ........................ 4/25/06 MG 12-1.............................................. 4/25/06 MG 16-1 thru MG 16-18 .................... 4/25/06 MG 17-1.............................................. 4/25/06 MG 18-1 thru MG 18-27 .................... 4/25/06 Apdx A-47 thru Apdx A-71................ 4/25/06 Apdx B-11 thru Apdx B-21 ................ 4/25/06 David A. Downey Manager, Rotorcraft Directorate Aircraft Certification Service Page 

Page 13OCROpen in PDF

Advisory U.S. Department Circular of Transportation Federal Aviation Administration Subject: CERTIFICATION OF TRANSPORT Date: 2/12/03 AC No: 29-2C CATEGORY ROTORCRAFT Initiated ASW-110 Change: Chg 1

7. PURPOSE.

a. This change revises existing material in 21 paragraphs and adds new material for seven paragraphs.

b. The change number and the date of the changed material are shown at the top of each page that contains changed text. The vertical lines in the right and left margins indicate the beginning and end of each change. Pages that have different page numbers but no text changes will retain the previous heading information.

8. CANCELLATION

a. AC 20-95, Fatigue Evaluation of Rotorcraft Structure, May 18, 1976, is canceled in its entirety.

AC 20-137, Dynamic Evaluation of Seat Restraint Systems & Occupant Restraint for Rotorcraft (Normal and Transport), March 30, 1992, is canceled in its entirety, and is replaced by material contained in AC 29.562.

c. AC test containing references to AC 20-95 and AC 20-137 was either changed or deleted in paragraphs AC 29.2, 29.562, 29.613, 29.785A, 29.865A, 29.907, 29.952, MG 8, and MG 12.

9. PRINCIPAL CHANGES.

Paragraphs 29.562, 29.571, 29.805, 29.1303, 29.1309, 29.1353, 29.1419, 29.1505,

29.1529, MG 5, MG 6, MG 11, MG 12, and Appendix B are revised.

b. New paragraphs 29.625A and 29.785B are added to Chapter 2.

c. New paragraphs MG 13, MG 14, MG 15, and MG 16 are added to Chapter 3.

d. Appendix A (previously reserved) is added New figures AC 29.562-1, 29.562-2, 29.562-3, 29.562-4, 29.562-5, 29.562-6, 29.562-7,

29.562-8, 29.1309-1, 29.1309-2, 29.1309-3, 29.1309-4, and 29.1309-5 are added in Chapter 2.

f. New figures AC 29 MG 11-2, 11-4, 11-5, 14-1, 15-1, and 15-2 are added in Chapter 3.

10. WEBSITE AVAILABILITY. To access this AC electronically, log on to http://www.airweb.faa.gov/rgl and then click on AC's.

AC 29-2C, Chg 1

PAGE CONTROL CHART Remove Pages Dated Insert Pages Dated v thru x .............................................. 9/30/99 xiii thru xxiii....................................... 9/30/99 A-3 thru A-4 ................................. 9/30/99 C-51 thru C-58 ................................. 9/30/99 D-13 thru D-14 ................................. 9/30/99 D-27 thru D-30 ................................. 9/30/99 D-85 thru D-100 ................................ 9/30/99 D-133 thru D-134 .............................. 9/30/99 E-29 thru E-30 . ................................. 9/30/99 E-57 thru E-58 ................................. 9/30/99 E-69 thru E-70 ................................. 9/30/99 E-75 thru E-80 ................................. 9/30/99 F-1 thru F-105 ................................. 9/30/99 G-3 thru G-50 ................................. 9/30/99 MG 5-1 thru MG 5-6 ......................... 9/30/99 MG 6-5 thru MG 6-18 ....................... 9/30/99 MG 8-5 thru MG 8-6 ......................... 9/30/99 MG 11-1 thru MG 11-25 ................... 9/30/99 MG 12-23 thru MG 12-24 ................. 9/30/99 MG 12-37 thru MG 12-38 ................. 9/30/99 MG 12-43 thru MG 12-44 ................. 9/30/99 none none none none none Apdx B-13 thru Apdx B-14 ............... 9/30/99 v thru x ............................................... 2/12/03 xiii thru xxiv....................................... 2/12/03 A-3 thru A-4....................................... 2/12/03 C-51 thru C-96 ................................... 2/12/03 D-13 thru D-14 ................................... 2/12/03 D-27 thru D-30 ................................... 2/12/03 D-85 thru D-100 ................................. 2/12/03 D-133 thru D-134 ............................... 2/12/03 E-29 thru E-30 .................................... 2/12/03 E-57 thru E-58 .................................... 2/12/03 E-69 thru E-70 .................................... 2/12/03 E-75 thru E-80 .................................... 2/12/03 F-1 thru F-120 .................................... 2/12/03 G-3 thru G-52 ..................................... 2/12/03 MG 5-1 thru MG 5-6 .......................... 2/12/03 MG 6-5 thru MG 6-20 ........................ 2/12/03 MG 8-5 thru MG 8-6 .......................... 2/12/03 MG 11-1 thru MG 11-22.................... 2/12/03 MG 12-23 thru MG 12-24.................. 2/12/03 MG 12-37 thru MG 12-38.................. 2/12/03 MG 12-43 thru MG 12-44.................. 2/12/03 MG 13-1 thru 13-6 ............................. 2/12/03 MG 14-1 thru 14-8 ............................. 2/12/03 MG 15-1 thru 15-18 ........................... 2/12/03 MG 16-1 thru 16-16 ........................... 2/12/03 Apdx A-1 thru Apdx A-70 ................. 2/12/03 Apdx B-13 thru Apdx B-14 ............... 2/12/03 David A. Downey Manager, Rotorcraft Directorate Aircraft Certification Service 2

Advisory Circular _____________________________________________ U.S. Department of Transportation Federal Aviation Administration Subject: CERTIFICATION OF TRANSPORT Date: 9/30/99 AC No: 29-2C CATEGORY ROTORCRAFT Initiated by: ASW-110 Change:

1. PURPOSE:

a. This is a total revision of AC 29-2B dated 7/30/97, with Change 1 dated 9/30/98, incorporated. In addition, new material plus changes to existing paragraphs are incorporated. This consolidated version is now renumbered as AC 29-2C and replaces AC 29-2B in its entirety. This revises existing material in 12 paragraphs, adds new material for two paragraphs, and renumbers paragraphs to correspond with Federal Aviation Regulations (FAR) numbering.

b. Requests from the rotorcraft industry to make the document easier to use resulted in renumbering the AC paragraphs to correspond with FAR numbering. The figure numbers are also renumbered accordingly.

c. This AC does not change regulatory requirements and does not authorize changes in, or deviations from, regulatory requirements. This AC establishes an acceptable means, but not the only means, of compliance. Since the guidance material presented in this AC is not regulatory, terms having a mandatory definition, such as “shall” and “must,” etc., as used in this AC, apply either to the reiteration of a regulation itself, or to an applicant who chooses to follow a prescribed method of compliance without deviation.

d. This advisory circular provides information on methods of compliance with 14 CFR Part 29, which contains the Airworthiness Standards for Transport Category Rotorcraft. It includes methods of compliance in the areas of basic design, ground tests, and flight tests.

2. CANCELLATION. AC 29 -2B, Certification of Transport Category Rotorcraft, dated 7/30/97, is canceled in its entirety.

3. BACKGROUND. Based largely on precedents set during rotorcraft certification programs spanning over 40 years, this AC consolidates guidance contained in earlier correspondence among FAA headquarters, foreign authorities, the rotorcraft industry, and certificating regions.

4. PRINCIPAL CHANGES:

a. Chapter 3 is now titled "Miscellaneous Guidance (MG), Transport Category Rotorcraft," with the following changes:

• Paragraphs that correspond to a FAR number are merged into existing AC text in Chapter 2.

• Paragraphs that do not correspond with a FAR number either remain in Chapter 3 and are renumbered as MG paragraphs, or are now an appendix.

• In order to stay aligned with FAR numbering, Appendices A, C, and D are reserved for future AC material.

b. Paragraphs revised to incorporate technical guidance are AC 21.35, 29.561, 29.610, 29.863,

29.952, 29.1093, 29.1305, 29.1309, 29.1351, 29.1353, and MG 4 (FADEC). Paragraph AC

29.661, Rotorblade Clearance, contains new material added as a result of National Transportation Safety Board (NTSB) recommendations.

c. New paragraphs added are 29.602, Critical Parts, and MG 12, External Loads. These paragraphs correspond with recent harmonized regulatory changes. Also, figure 29.863- 1 is new.

d. The AC is now divided by Subparts and page numbers reflect the relevant FAR Subpart.

e. “FAA/AUTHORITY” as used in this document means FAA or another airworthiness authority that has adopted this AC as a means of compliance with the appropriate regulation referenced.

5. DEVIATIONS. As rotorc raft designs vary from conventional configurations, it may become necessary to deviate from the methods and procedures outlined in this AC. These procedures are only one acceptable means of compliance with Part 29. Any alternate means proposed by an applicant will be given due consideration. Applicants are encouraged to use their technical ingenuity and resourcefulness to develop more efficient and less costly methods of achieving the objectives of Part 29. Regulatory personnel and designees should respond to such efforts by the use of engineering judgment in fostering any such efforts as long as the letter and spirit of Part 29 and the Federal Aviation Act are respected. It is recommended that unusual or unique projects be coordinated a sufficient time in advance with the Rotorcraft Standards Staff, ASW-110, or the appropriate airworthiness authority, to ensure timely and uniform consideration.

6. APPLICABILITY. This material is not to be construed as having any legally binding status and must be treated as advisory only. However, to ensure standardization in the certification process, these procedures should be considered during all rotorcraft type certification and supplemental type certification activities.

7. PARAGRAPHS KEYED TO FAR PART 29. Each paragraph has the applicable amendment to Part 29 shown in the title. All of the original guidance material has been retained as appropriate, even as changes are made to the regulations. This is accomplished through the use of “A,” “B,” etc., paragraphs, which follow the original numbered paragraphs. These subsequent paragraphs provide updated guidance information or changes to policy that parallel a specific rule change.

The guidance material in the original paragraph (for earlier amendments) still applies and is modified as explained in each of the later paragraphs for later amendments. The applicable amendment number will only appear in the title line for the “A,” “B,” etc., paragraphs. The guidance material in the initial paragraph is intended to apply to all amendments except as modified by the later paragraphs. Each ensuing “A,” “B,” etc., paragraph will be identified with an amendment level to indicate the rule change that precipitated the policy change.

8. RELATED PUBLICATIONS. FAA Certification personnel and designees should be familiar with Order 8110.4, Type Certification, and Order 8100.5, Aircraft Certification Directorate Procedures.

Eric Bries Acting Manager, Rotorcraft Directorate 2