# AD 78-01-14: 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Cessna 182, 182A, 182B, 182C, 182D, 182E, 182F, 182G, 182H, 182J, 182K, 182L and 7 more - Effective: January 23, 1978 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small airplane - Amendment: 39-3123 - Registered aircraft: 11,830 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C43A0C5EBE469AF386256A3400690666.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/78-01-14 ## The airworthiness directive 78-01-14 CESSNA: Amendment 39-3123. Applies to Model 182 Series (S/N's 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 Kits AK-150-97 or AK-150-104 or Kits AK-150-110 and AK-172-190 which were supplied by Cessna when Kits AK-150-97 and 150-104 were discontinued. 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, within the next 100 hours time-in-service after the effective date of this AD or by March 15, 1978, whichever occurs first, accomplish the following: A) Install P/N 0712765-1 plastic guard over the P/N S1579 battery relay, or on those Cessna Model 182 airplanes not utilizing a P/N S1579 battery relay install two P/N MS25171-1S and two P/N MS25171-4S rubber nipple covers on the battery relay terminal in those airplanes, in accordance with Cessna Service Letter SE-77-41, dated November 7, 1977, or later approved revisions. B) Any equivalent method of compliance with this AD must be approved by the Chief, Engineering & Manufacturing Branch, FAA, Central Region. This amendment becomes effective January 23, 1978. ## 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/78-01-14/models.md Every aircraft: https://openairdocs.org/ad/78-01-14/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.