Rotorcraft · AMA/EXPR UNKNOWN ENG · as of Sep 21, 2026
Distribution · currently registered
By state (top 10)
- GA 100.0% 1
By decade of manufacture
- 1960s 100.0% 1
NTSB records
No NTSB-recorded events match SIKORSKY CH-54A in the indexed corpus.
Airworthiness directives
6 directive(s) on file. Showing the most recent 6.
- Oct 31, 2013
Airworthiness Directives; Sikorsky Aircraft Corporation-Manufactured (Sikorsky) Model Helicopters (Type Certificate Currently Held by Erickson Air-Crane Incorporated)
We are superseding Airworthiness Directive (AD) 97-19-10 for Sikorsky Aircraft Corporation-manufactured Model S-64E helicopters (type certificate currently held by Erickson Air-Crane Incorporated (Erickson)). AD 97-19-10 required inspecting and reworking the main gearbox (MGB) assembly second stage lower planetary pla…
- May 28, 2013
Airworthiness Directives; Sikorsky Aircraft Corporation-Manufactured (Sikorsky) Model Helicopters (type certificate currently held by Erickson Air-Crane Incorporated)
We propose to supersede an existing airworthiness directive (AD) for Sikorsky Aircraft Corporation-manufactured Model S-64E helicopters (type certificate currently held by Erickson Air-Crane Incorporated (Erickson)). That AD currently requires inspecting and reworking the main gearbox (MGB) assembly second stage lower…
- Sep 14, 2000
Airworthiness Directives; Sikorsky Aircraft-Manufactured Model CH-54A Helicopters
This amendment supersedes an existing airworthiness directive (AD) that applies to Sikorsky Aircraft-manufactured Model CH-54A helicopters. That AD currently requires initial and recurring inspections and rework or replacement, if necessary, of the second stage lower planetary plate (plate). This AD requires the same…
- Apr 20, 2000
Airworthiness Directives; Sikorsky Aircraft-manufactured Model CH-54A Helicopters
This document proposes the supersedure of an existing airworthiness directive (AD), applicable to Sikorsky Aircraft- manufactured Model CH-54A helicopters, that currently requires initial and recurring inspections and rework or replacement, if necessary, of the second stage lower planetary plate (plate). This action w…
- Apr 1, 1999
Airworthiness Directives; Sikorsky Aircraft-manufactured Model CH-54A Helicopters
This amendment adopts a new airworthiness directive (AD), applicable to Sikorsky Aircraft-manufactured Model CH-54A helicopters, that requires an initial and recurring inspections and rework or replacement, if necessary, of the second stage lower planetary plate (plate). This amendment is prompted by cracked plates th…
- Feb 10, 1998
Airworthiness Directives; Sikorsky Aircraft-Manufactured Model CH-54A Helicopters
This document proposes the adoption of a new airworthiness directive (AD) that is applicable to Sikorsky Aircraft-manufactured Model CH-54A helicopters. This proposal would require an initial and recurring inspections and rework or replacement, if necessary, of the second stage lower planetary plate (plate). This prop…
Type certificate data sheets · 2 matches in the FAA catalog
- H16NM Aviation International Rotors Inc. Historical Rev 1 · 11/04/1996
Models: CH-54A
- H17NM Silver Bay Logging Inc. Current Rev 1 · 06/30/1995
Models: CH-54A
Supplemental type certificates · 6 on file
- 06/09/2000 STC SR00813SE Fabrication and installation of Columbia Helicopters pylon fittings P/N C54S2022-1 and -2 for replacement of Sikorsky fittings P/N 6420-66341-101 and -102 at the transition of fuse… Columbia Helicopters Inc DRS ↗
- 06/20/1997 STC SR00449SE Replacement of oil in main transmission, intermediate gearbox and tail gearbox with Mobil SHC 627 synthetic bearing and gear lubricant. (CH-54A SIKORSKY Restricted Category ONLY) Columbia Helicopters Inc DRS ↗
- 05/14/1997 STC SR00374LA Installation of Fire Fighting System. Heavy Lift Helicopters Inc DRS ↗
- 02/23/1996 STC SR00282SE Fabrication and installation of a fixed tail skid system to replace existing retractable tail skid system. Columbia Helicopters Inc DRS ↗
- 09/09/1995 STC SR00231SE Relocation of the existing transmission oil cooler and blower, and a change in the oil cooler drive system from a belt drive to hydraulic motor drive. Columbia Helicopters Inc DRS ↗
- 10/13/1989 STC SA4302NM (PAGE 1) Installation of Electronics Int'l digital automatic engine analyzer. Electronics International DRS ↗
Advisory circulars & Federal Register
Advisory circulars
No ACs explicitly mention this type. Showing universal operating-rule ACs that apply to all aircraft.
Recent Federal Register · Parts 91 & 43
- 2026-09-14 Use of Certain Restricted Category Aircraft for the Transport of Firefighters for Wildfire Suppression FR ↗
- 2026-07-31 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
- 2026-07-02 Enabling Supersonic Overland Flight FR ↗
- 2026-07-01 Mechanic Certification: Inspection Rating and Recent Experience Requirements FR ↗
- 2026-06-30 Designation-Restrict the Operation of Unmanned Aircraft in Close Proximity to a Fixed Site Facility; Extension of Comment Period FR ↗
Registered N-numbers · 1
| N-number | St | Year | NTSB | FAA |
|---|---|---|---|---|
| N429C | GA | 1967 | · | Look up ↗ |
Source — FAA Aircraft Registry
Sources
- FAA Aircraft Registry ↗ Refreshed Apr 27, 2026 Available
- NTSB CAROL ↗ Refreshed Jun 10, 2026 Available
- Federal Register (FAA Airworthiness Directives) ↗ Refreshed Apr 27, 2026 Available