# AD 80-10-01: Placard - Airspeed - Type: Airworthiness directive - Status: Historical - Products: Fabrication of attaching and rigging parts (Airglas STC SA213AL) - Effective: May 12, 1980 - Superseded by: [AD 98-23-02](https://openairdocs.org/ad/98-23-02) - Product type: Aircraft, Small airplane - Amendment: 39-3762 - Registered aircraft: 2,612 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/39BBCEA01F39498586256C140049B483.0001 - DRS record last changed: August 7, 2025 - Page: https://openairdocs.org/ad/80-10-01 ## The airworthiness directive 80-10-01 CESSNA: Amendment 39-3762. Applies to Cessna Models 180 through 180J, 185 through 185E, A185E, and A185F airplanes equipped with Airglas Engineering Company, Inc., LW3600-180 or LW3600-180A ski installations in accordance with STC SA213AL. Compliance required as indicated, unless already accomplished. To preclude the possibility of a ski rotating tip-down in flight, with resulting adverse flight and landing characteristics, accomplish the following: (a) Operation of airplanes equipped with Airglas Engineering Company, Inc., LW3600-180 or LW3600-180A ski installations, in excess of 160 KT IAS is prohibited. (b) Prior to further flight, on airplanes equipped with Airglas Engineering Company, Inc., LW3600-180 or LW3600-180A ski installation, install a placard on the instrument panel immediately adjacent to the airspeed indicator and in plain view of the pilot to read as follows: DO NOT EXCEED 160 KTS IAS WITH AIRGLAS LW3600-180 SKIS INSTALLED or DO NOTEXCEED 160 KTS IAS WITH AIRGLAS LW3600-180A SKIS INSTALLED whichever is appropriate. (c) Within the next 50 hours time in service after the effective date of this AD, and thereafter at any time the skis are installed, rig and modify the LW3600-180 or LW3600-180A ski check, safety, and bungee cables in accordance with Airglas Engineering Company, Inc. Service Bulletin No. LW3600-3, dated September 21, 1979, or an FAA-approved equivalent. This amendment supersedes Amendment 39-1218 (36 FR 9860) AD 71-11-06. This amendment becomes effective May 12, 1980. ## Affected data sheets (2) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS 5A6](https://openairdocs.org/tcds/5A6): Textron Aviation Inc.; names 8 of 11 models: 180E, 180J, 180H, 180A, 180B, 180D, 180G, 180C - [TCDS 3A24](https://openairdocs.org/tcds/3A24): Textron Aviation Inc.; names 7 of 8 models: 185B, A185F, 185E, 185C, A185E, 185A, 185D ## 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: 2,612 (2,612 by airframe model, 0 by engine model) - Makers: Cessna 2,612 Models with the most aircraft: - [Cessna A185F](https://openairdocs.org/model/cessna-a185f): 1,120 aircraft (airframe model) - [Cessna 180H](https://openairdocs.org/model/cessna-180h): 366 aircraft (airframe model) - [Cessna 180J](https://openairdocs.org/model/cessna-180j): 266 aircraft (airframe model) - [Cessna A185E](https://openairdocs.org/model/cessna-a185e): 252 aircraft (airframe model) - [Cessna 180A](https://openairdocs.org/model/cessna-180a): 206 aircraft (airframe model) - [Cessna 180B](https://openairdocs.org/model/cessna-180b): 94 aircraft (airframe model) - [Cessna 180C](https://openairdocs.org/model/cessna-180c): 56 aircraft (airframe model) - [Cessna 180D](https://openairdocs.org/model/cessna-180d): 51 aircraft (airframe model) - [Cessna 185A](https://openairdocs.org/model/cessna-185a): 48 aircraft (airframe model) - [Cessna 180G](https://openairdocs.org/model/cessna-180g): 40 aircraft (airframe model) - [Cessna 180E](https://openairdocs.org/model/cessna-180e): 33 aircraft (airframe model) - [Cessna 185D](https://openairdocs.org/model/cessna-185d): 30 aircraft (airframe model) - [Cessna 185C](https://openairdocs.org/model/cessna-185c): 22 aircraft (airframe model) - [Cessna 185B](https://openairdocs.org/model/cessna-185b): 14 aircraft (airframe model) - [Cessna 185E](https://openairdocs.org/model/cessna-185e): 14 aircraft (airframe model) All 16 models: https://openairdocs.org/ad/80-10-01/models.md Every aircraft: https://openairdocs.org/ad/80-10-01/aircraft.md ## Related documents - [AD 98-23-02](https://openairdocs.org/ad/98-23-02): Airglas Engineering Company Ski Installation ยท Fabrication of attaching and rigging parts (Airglas STC SA213AL). Effective Dec 22, 1998. Supersedes this AD - [STC SA213AL](https://openairdocs.org/stc/SA213AL): Fabrication of attaching and rigging parts for the installation of Airglas Engineering Co, Inc, model LW3600-180 single position or Model LW3600-180A two position fixed penetration wheel skis.. Airglas Inc., 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.