88-25-08: Engine Cooling System
FAA order 88-25-08 is an airworthiness directive in force since January 3, 1989. The FAA's subject line: Engine Cooling System. It names Piper PA-46 Malibu, Mirage, Matrix and M-Class: about 1,692 aircraft on the U.S. register today, 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
- Aircraft
- Makes
- Piper Aircraft Inc.
- Models
- PA-46-310P
- On this site
- Piper PA-46 Malibu, Mirage, Matrix and M-Class 1,692 registered
Dates and paperwork
- In force since
- January 3, 1989
- Published
- December 1, 1988 (signed November 22, 1988)
- 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 (870 characters)
88-25-08 PIPER: Amendment 39-6087. Applies to Model PA-46-310P (all serial numbers) airplanes certificated in any category.
Compliance: Required within the next 50 hours time-in-service after the effective date of this AD, unless already accomplished.
To prevent possible catastrophic engine failure accomplish the following:
(a) Modify the engine cooling system in accordance with Piper Service Bulletin 892, dated August 24, 1988.
(b) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished.
(c) An equivalent means of compliance with this AD, if used, must be approved by the Manager, Atlanta Aircraft Certification Office, ACE-115A, Federal Aviation Administration, 1669 Phoenix Parkway, Suite 210C, Atlanta, Georgia 30349.
This amendment (39-6087, AD 88-25-08) becomes effective on January 3, 1989.
Related safety bulletins advice on the same designs, not orders
2018-11-21SW-18-31 · NAVIGATION, ATTITUDE, AND DIRECTION DATA SYSTEM
2016-12-13CE-17-02 · Cabin Altitude Encoder Alternative Method of Compliance (AMOC) to Airworthiness Directive (AD)...
2015-06-15CE-15-18 · WING SPAR Main Spar Lower Cap Cracks
2014-08-06CE-14-23 · Powerplant; Air Intake
2014-07-14CE-09-13R1 · POWERPLANT - ENGINE MOUNT Cracking at nose landing gear attachment and trunnion attachment
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 October 30, 2026. Connections as data: /graph/directive/88-25-08.json · aircraft systems.