# AD 77-04-05: Carburetor Air Intake - Type: Airworthiness directive - Status: Current - Products: Cessna 180, 180A, 180B, 180C, 180D, 180E, 180F, 180G, 180H, 180J, 180K, 182 and 30 more - Effective: March 1, 1977 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small airplane - Amendment: 39-2838 - Registered aircraft: 14,945 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2CBC9081F42D894786256A3400683265.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/77-04-05 ## The airworthiness directive 77-04-05 CESSNA: Amendment 39-2838. Applies to 180 Series (Serial Numbers 18050662 thru 18052711); 182 Series (Serial Numbers 18251557 thru 18264790); 185 Series (Serial Numbers 18500001 thru 18501832); 188 Series (Serial Numbers 18800001 thru 18802348); and A188 Series (Serial Numbers 18800001 thru 18800707) airplanes. Compliance: Required as indicated, unless already accomplished. To prevent ingestion of the induction air box seal into the carburetor, within the next 50 hours' time in service after the effective date of this AD, accomplish the following: A. Disconnect the carburetor air intake flexible duct assembly from the induction air box. B. Visually inspect the condition of the existing carburetor induction air box seal(s) and if not securely bonded to the carburetor intake flexible duct assembly, remove the existing seal(s) and install new P/N 0752016-10 and -11 seals in accordance with the following procedure: 1. Clean the metal surface of thecarburetor air intake flexible duct assembly and the new P/N 0752016-10 and -11 seals with methyl ethyl keytone, methyl iso butyl keytone, acetone or lacquer thinner solvent. 2. Apply EC 847 adhesive to the carburetor air intake flexible duct assembly adapter and P/N 0752016-10 and -11 seals, allow to dry until tacky (usually between 5 and 30 minutes), and then press firmly together to insure contact (complete cure will occur within 24 hours). 3. Install the lower P/N 0752016-10 seal on the horizontal flat surface on the bottom side of the adapter flange, locating the forward edge of the seal so that it does not extend into the bend radius on the front side of the horizontal surface. 4. Pierce a hole in each P/N 0752016-11 seal to match the holes for the fasteners in the carburetor air intake flexible duct assembly adapter flange. 5. Reinstall the carburetor air intake flexible duct assembly flange to the carburetor induction air box. C. Any equivalent method of compliance with this AD must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. Cessna Service Letter SE76-18, dated October 11, 1976, or later approved revisions, covers the subject matter of this AD. This amendment becomes effective March 1, 1977. ## Affected data sheets (4) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS 3A13](https://openairdocs.org/tcds/3A13): Textron Aviation Inc.; names 19 of 23 models: 182D, 182A, 182J, 182P, 182B, 182L, 182G, 182Q… - [TCDS 5A6](https://openairdocs.org/tcds/5A6): Textron Aviation Inc.; names 11 of 11 models: 180E, 180J, 180F, 180H, 180A, 180, 180B, 180D… - [TCDS 3A24](https://openairdocs.org/tcds/3A24): Textron Aviation Inc.; names 6 of 8 models: 185B, 185E, 185C, 185A, 185D, 185 - [TCDS A9CE](https://openairdocs.org/tcds/A9CE): Textron Aviation Inc.; names 6 of 7 models: A188A, A188B, 188A, 188, A188, 188B ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 14,945 (14,945 by airframe model, 0 by engine model) - Makers: Cessna 14,595, Textron 347, Cessna Wren 3 Models with the most aircraft: - [Cessna 182P](https://openairdocs.org/model/cessna-182p): 2,099 aircraft (airframe model) - [Cessna 182Q](https://openairdocs.org/model/cessna-182q): 1,565 aircraft (airframe model) - [Cessna 180](https://openairdocs.org/model/cessna-180): 1,177 aircraft (airframe model) - [Cessna 182T](https://openairdocs.org/model/cessna-182t): 969 aircraft (airframe model) - [Cessna 182A](https://openairdocs.org/model/cessna-182a): 784 aircraft (airframe model) - [Cessna 182S](https://openairdocs.org/model/cessna-182s): 606 aircraft (airframe model) - [Cessna 182J](https://openairdocs.org/model/cessna-182j): 487 aircraft (airframe model) - [Cessna 182R](https://openairdocs.org/model/cessna-182r): 487 aircraft (airframe model) - [Cessna 182](https://openairdocs.org/model/cessna-182): 446 aircraft (airframe model) - [Cessna 182M](https://openairdocs.org/model/cessna-182m): 432 aircraft (airframe model) - [Cessna 182H](https://openairdocs.org/model/cessna-182h): 423 aircraft (airframe model) - [Cessna 182K](https://openairdocs.org/model/cessna-182k): 413 aircraft (airframe model) - [Cessna 182L](https://openairdocs.org/model/cessna-182l): 411 aircraft (airframe model) - [Cessna 182B](https://openairdocs.org/model/cessna-182b): 406 aircraft (airframe model) - [Cessna 182G](https://openairdocs.org/model/cessna-182g): 391 aircraft (airframe model) - [Cessna 182E](https://openairdocs.org/model/cessna-182e): 380 aircraft (airframe model) - [Cessna 180H](https://openairdocs.org/model/cessna-180h): 366 aircraft (airframe model) - [Textron 182T](https://openairdocs.org/model/textron-182t): 347 aircraft (airframe model) - [Cessna 182N](https://openairdocs.org/model/cessna-182n): 336 aircraft (airframe model) - [Cessna 182F](https://openairdocs.org/model/cessna-182f): 293 aircraft (airframe model) All 47 models: https://openairdocs.org/ad/77-04-05/models.md Every aircraft: https://openairdocs.org/ad/77-04-05/aircraft.md Its text cites no advisory circulars or STCs. ## NTSB investigations that cite this AD (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB ATL86FEK01](https://openairdocs.org/ntsb/ATL86FEK01), May 4, 1986: Cessna 182D (N8880X), Mt. Gilead, OH, substantial damage --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.