# AD 82-07-02: Engine Crankcase Breather - Type: Airworthiness directive - Status: Current - Products: Lycoming O-360-A1A engine and Hartzell HC-C2YK-1B/7666A-2… (Avcon Industries STC SA1324CE or 14 others) - Effective: April 8, 1982 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small airplane - Amendment: 39-4353 - Registered aircraft: 19,239 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/89D2E182A363570F862569B9004D3EDE.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/82-07-02 ## The airworthiness directive 82-07-02 CESSNA: Amendment 39-4353. Applies to Models 170A, 170B, 172, 172A through 172P, 175, 175A, 175B, 175C, P172D, and R172E (USAF T-41B) airplanes modified in accordance with STCs SA3-13, SA3-126, SA3-571, SA3-672, SA3-674, SA135CE, SA420CE, SA421CE, SA424CE, SA610SW, SA647CE, SA777CE, SA806CE, SA807CE, or SA1324CE, certificated in any category. COMPLIANCE: Required as indicated, unless already accomplished. To reduce the possibility of rapid loss of engine oil caused by ice obstruction of the engine crankcase breather, accomplish the following: A) Within the next 50 hours time-in-service after the effective date of this AD: 1. Visually examine the engine crankcase breather to determine if an alternate air outlet is drilled or cut in the tube as shown in Figure 1. If any of these provisions exist, make an appropriate entry in the aircraft maintenance records per paragraph B). No further action is necessary. 2. If the hole or cutout shown in Figure 1 is not in the engine crankcase breather tube: a. Inspect the crankcase to crankshaft seal and ensure that the seal is secure. (This seal is located behind the starter ring gear in the forward most part of the crankcase.) Reinstall or replace this seal if it is not flush with the forward face of the crankcase. b. Drill the engine crankcase breather tube line to include an alternate air outlet as shown in Figure 1. B) Paragraph A)1 of this AD may be accomplished by the holder of at least a private pilot certificate issued under Part 61 of the Federal Aviation Regulations on any airplane owned or operated by that person. Make the prescribed entry in the aircraft maintenance records, including those airplanes on which it has already been accomplished, indicating compliance with this AD. C) The airplane may be flown in accordance with FAR 21.197 to a location where paragraph A)2 of this AD may be accomplished. D) Any equivalent method of compliance with this AD may be used when approved by the Chief, Wichita Aircraft Certification Office, FAA, Room 238, Mid-Continent Airport, Terminal Building No. 2299, Wichita, Kansas 67209; telephone (316) 269-7000. This amendment becomes effective on April 8, 1982. TYPICAL INSTALLATION ## Affected data sheets (3) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS 3A12](https://openairdocs.org/tcds/3A12): Textron Aviation Inc.; names 15 of 18 models: 172F (USAF T-41A), 172M, 172K, 172G, 172A, 172L, 172, 172H (USAF T-41A)… - [TCDS 3A17](https://openairdocs.org/tcds/3A17): Textron Aviation Inc.; names 6 of 12 models: 175, 175B, P172D, R172E, 175C, 175A - [TCDS A-799](https://openairdocs.org/tcds/A-799): Textron Aviation Inc.; names 2 of 3 models: 170A, 170B ## 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: 19,239 (19,239 by airframe model, 0 by engine model) - Makers: Cessna 19,239 Models with the most aircraft: - [Cessna 172M](https://openairdocs.org/model/cessna-172m): 3,573 aircraft (airframe model) - [Cessna 172N](https://openairdocs.org/model/cessna-172n): 3,138 aircraft (airframe model) - [Cessna 172](https://openairdocs.org/model/cessna-172): 1,805 aircraft (airframe model) - [Cessna 170B](https://openairdocs.org/model/cessna-170b): 1,300 aircraft (airframe model) - [Cessna 172P](https://openairdocs.org/model/cessna-172p): 1,111 aircraft (airframe model) - [Cessna 172K](https://openairdocs.org/model/cessna-172k): 1,026 aircraft (airframe model) - [Cessna 172L](https://openairdocs.org/model/cessna-172l): 857 aircraft (airframe model) - [Cessna 172H](https://openairdocs.org/model/cessna-172h): 780 aircraft (airframe model) - [Cessna 172G](https://openairdocs.org/model/cessna-172g): 722 aircraft (airframe model) - [Cessna 172F](https://openairdocs.org/model/cessna-172f): 717 aircraft (airframe model) - [Cessna 172E](https://openairdocs.org/model/cessna-172e): 617 aircraft (airframe model) - [Cessna 175](https://openairdocs.org/model/cessna-175): 536 aircraft (airframe model) - [Cessna 170A](https://openairdocs.org/model/cessna-170a): 513 aircraft (airframe model) - [Cessna 172D](https://openairdocs.org/model/cessna-172d): 471 aircraft (airframe model) - [Cessna 172A](https://openairdocs.org/model/cessna-172a): 435 aircraft (airframe model) - [Cessna 172B](https://openairdocs.org/model/cessna-172b): 413 aircraft (airframe model) - [Cessna 172C](https://openairdocs.org/model/cessna-172c): 362 aircraft (airframe model) - [Cessna 172I](https://openairdocs.org/model/cessna-172i): 353 aircraft (airframe model) - [Cessna 175A](https://openairdocs.org/model/cessna-175a): 245 aircraft (airframe model) - [Cessna 175B](https://openairdocs.org/model/cessna-175b): 100 aircraft (airframe model) All 24 models: https://openairdocs.org/ad/82-07-02/models.md Every aircraft: https://openairdocs.org/ad/82-07-02/aircraft.md ## Related documents - [STC SA1324CE](https://openairdocs.org/stc/SA1324CE): Installation of Lycoming O-360-A1A engine and Hartzell HC-C2YK-1B/7666A-2 propeller.. Avcon Industries Inc, Named in the applicability - [STC SA135CE](https://openairdocs.org/stc/SA135CE): Installation of Lycoming O-320-A1A, A1B, A3A, A3B or Lycoming O-320-B1A, B1B, B3A, B3B engine, Hartzell HC-82X or HC-A2X series propellers with 7636D-4 blades and Woodward Model 210080 Governor. Data required: Doyn drawing 2000 dated February 21, 1063 and Doyn installation instructions dated February 21, 1963.. D'Shannon Products Ltd., Named in the applicability - [STC SA3-126](https://openairdocs.org/stc/SA3-126): Lycoming O-340-A1A engine and Hartzell HC-82XG-1DB/8433-12 propeller.. D'Shannon Products Ltd., Named in the applicability - [STC SA3-13](https://openairdocs.org/stc/SA3-13): Install 170 hp Lycoming O-340-A1A engine and Hartzell HC-82XL-1DB/8433-12 propeller according to Doyn data listed on Engineering Releases 100 (3/22/58), 1010 (3/16/57), 1011 (8/28/57), 1012 (7/15/57), 1014 (3/30/57), 1050 (7/13/57), 1051 (& DCN 1, 12/10/57), 1052 (7/19/57), 1053 (7/19/57), 1099 (3/22/58), and Instructions (2 sheets, undated) Data required for parts manufacture: As listed on Engineering Releases 1001 (1/18/57), 1002 (12/21/57), 1003 (5/1/57), 1004 (7/13/57), 1005 (7/12/57), 1006 (3/30/57), 1007 (4/12/57), 1008 (2/27/57), 1009 (10/23/57), 1015 (2/25/56).. D'Shannon Products Ltd., Named in the applicability - [STC SA3-571](https://openairdocs.org/stc/SA3-571): Lycoming O-360-A1D engine, McCauley 2D36C14/78KM-4 or Hartzell HC-C2YK-1A/7666-2 propellers.. D'Shannon Products Ltd., Named in the applicability - [STC SA3-672](https://openairdocs.org/stc/SA3-672): Installation of Lycoming O-360-A1A, A1D, or B1B engine with McCauley 2D36C14-X/78KM-4 propeller or Lycoming O-360-A1A and A1D engines with Hartzell HC-C2YK-1A/7666A-2 propeller. Data required: Doyn Aircraft, Inc. Drawings: 1000, 1005 Rev. C, 1006 Rev. C, 1009, 1010 Rev. A, 1011, 1012 Rev. A, 1013, 1014, 1015, 1016, 1099, 1100 Rev. B, 1101 Rev. A, 1102, 1103 Rev. A, 1104, 1107, 1150. Drawing Changes Notices: 1005-5A, 1006-8A, 1006-6, 1009-2A, 1199-1A, 1199-2A, and 1199-3A.. D'Shannon Products Ltd., Named in the applicability - [STC SA3-674](https://openairdocs.org/stc/SA3-674): Installation of Lycoming O-360-A1D engine and McCauley 2D36C14/78KM-4 or Hartzell HC-C2YK-1A/7666-2 propeller in accordance with Doyn Aircraft Drawing List for Model 1700 conversion dated May 6, 1964; for Cessna Model 175B: Atlas Aviation Oil Cooler Installation dated September 12, 1967, is required.. D'Shannon Products Ltd., Named in the applicability - [STC SA420CE](https://openairdocs.org/stc/SA420CE): Installation of 0-360-( ) series engines, fixed pitch and constant speed propellers. Barbara or Bob Williams, Named in the applicability - [STC SA421CE](https://openairdocs.org/stc/SA421CE): Installation of a Lycoming O-360-A1A or O-360-A1D 180 hp engine or O-360-B1B 168 hp engine and constant speed propeller. Williams Barbara or Bob, Named in the applicability - [STC SA424CE](https://openairdocs.org/stc/SA424CE): Installation of Lycoming 0-360- ( ) engine and Hartzell HC-C2YK-1N7666-2, HC-92ZK-8D/8447-12A or McCauley 2D36Cl4/7BKM-4 propeller or McCauley or Sensenich fixed pitched propeller. *Landplane only. Barbara or Bob Williams, Named in the applicability - [STC SA610SW](https://openairdocs.org/stc/SA610SW): Installation of Lycoming O-320 and O-360 series engine with Hartzell propeller.. General Aviation Concepts, Named in the applicability - [STC SA647CE](https://openairdocs.org/stc/SA647CE): Installation of Lycoming O-360-A1A 180 h.p. engine and constant speed propeller.. Barbara or Bob Williams, Named in the applicability - [STC SA777CE](https://openairdocs.org/stc/SA777CE): Installation of Lycoming 180 hp engine and a Hartzell HC-C2YK-1A/766A-2 propeller.. Robert L & Barbara V Willia,s, Named in the applicability - [STC SA806CE](https://openairdocs.org/stc/SA806CE): Installation of Lycoming engine model O-360-( ) and propellers.. Williams Robert or Barbara, Named in the applicability - [STC SA807CE](https://openairdocs.org/stc/SA807CE): Installation of Lycoming 180 hp engine and constant speed propeller. (172P LANDPLANES). Robert or Barbara Williams, Named in the applicability --- 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.