69-26-03: Modify Power and Accessories Gear Box
FAA order 69-26-03 is an airworthiness directive in force since December 25, 1969. The FAA's subject line: Modify Power and Accessories Gear Box. It names the Rolls-Royce 250-C18, Rolls-Royce 250-C47 series engines: about 17 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: engine.
What it applies to as the FAA lists it
- Kind of product
- Engine
- Makes
- Rolls-Royce Corporation
- Models
- 250-C18, 250-C18A, 250-C18B, 250-C18C
- Engine series
- Rolls-Royce 250-C18 1 aircraft
Rolls-Royce 250-C47 series 16 aircraft
Dates and paperwork
- In force since
- December 25, 1969
- Docket
- Unknown
- Status
- Current
- The FAA's document
- Read the order on the FAA's site
The order itself the regulatory text, as published
Show the full text (1,148 characters)
69-26-03 ALLISON: Amdt. 39-895. Applies to Model 250-C18 Series Engines.
Compliance: Unless already accomplished, accomplish the following:
(1) At next overhaul but no later than 750 hours' time in service since last overhaul or since new if never overhauled, modify the engine in accordance with Allison Commercial Engine Bulletins numbered 250CEB-57, - 58, -59, -61, -62, -63, -65, -66, -67, -68, -69, -70, -72, -73, -74, -75, -76, -77, -78, -79, -80, -81, -85, -86 and -89, or an equivalent method approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region, except as specified in (2) below.
(2) At next overhaul but no later than 1125 hours' time in service since last overhaul or since new if never overhauled, modify the power and accessories gear box in accordance with applicable portions of Allison Commercial Engine Bulletins specified in (1) above, or an equivalent method approved by the Chief, Engineering and Manufacturing Branch, FAA Central Region.(3) All engines must be modified in accordance with (1) and (2) above on or before October 1, 1971.
This amendment becomes effective December 25, 1969.
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of November 2, 2026. Connections as data: /graph/directive/69-26-03.json · aircraft systems.