# AD 77-23-11: ELT Installation - Type: Airworthiness directive - Status: Current - Products: Cessna 182, 182A, 182B, 182C, 182D, 182E, 182F, 182G, 182H, 182J, 182K, 182L and 7 more - Effective: November 28, 1977 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small airplane - Amendment: 39-3084 - Registered aircraft: 11,830 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A28E8DC642295DDA86256A34006842E4.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/77-23-11 ## The airworthiness directive 77-23-11 CESSNA: Amendment 39-3084. Applies to Model 182 Series (Serial Nos. 18260797 thru 18265965) plus all other Cessna Model 182 Series incorporating ELT installations accomplished in accordance with Cessna Service Letter SE73-41 dated December 12, 1973, and references Kits AK150-97F or AK150-104A. Compliance: Required as indicated unless already accomplished. To preclude the possibility of an in-flight fire due to a loose ELT antenna coaxial cable connector making contact with the terminals of the battery relay and thereby shorting the electrical power to ground: A) Before the next flight, visually inspect the ELT antenna coaxial cable for security, and correct as necessary in accordance with Cessna Service Letter SE73-41, or later approved revisions and/or the applicable Cessna Service Manual, by accomplishing the following: 1. Assure that the ELT antenna RF connector is solidly attached at the ELT and is spring loaded in the detent position. If not correctly attached and/or spring loaded, either properly secure the connector, or, if damaged, replace the complete antenna coaxial cable assembly. 2. Assure that the plastic cable clamp, Cessna P/N S1155-3 or equivalent, is properly installed on the ELT coaxial cable and secured to structure above the ELT transmitter and mount (applicable to S/N's 33000 thru 18265175). If the coaxial cable is improperly secured, install a new plastic cable clamp, Cessna P/N S1155-3 or equivalent, if necessary, and properly secure. 3. Assure that the length of excess coaxial cable is coiled and secured to the mounted ELT transmitter by the required plastic sta-strap which has been properly installed. If not, properly secure with a new plastic sta-strap or equivalent. B) If operations are being conducted with the ELT removed, as provided by FAR 91.52(f), ascertain that the antenna cable is secured away from the battery relay. C) Airplanes may be flown, in accordance with FAR 91.52(e)(2), to a location where this AD can be accomplished, provided the operator disconnects the ELT antenna cable and removes it from the aircraft. D) Any equivalent method of compliance with this AD must be approved by the Chief, Engineering & Manufacturing Branch, FAA, Central Region. This amendment becomes effective November 28, 1977, to all persons except those to whom it has already been made effective by air mail letter from the FAA dated October 28, 1977. ## Affected data sheets (1) (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… ## 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: 11,830 (11,830 by airframe model, 0 by engine model) - Makers: Cessna 11,480, 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 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) - [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) - [Cessna 182C](https://openairdocs.org/model/cessna-182c): 282 aircraft (airframe model) - [Cessna 182D](https://openairdocs.org/model/cessna-182d): 270 aircraft (airframe model) All 24 models: https://openairdocs.org/ad/77-23-11/models.md Every aircraft: https://openairdocs.org/ad/77-23-11/aircraft.md Its text cites no advisory circulars or STCs. --- 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.