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63-15-01: Exhaust Valves

FAA order 63-15-01 is an airworthiness directive in force since December 31, 1969. The FAA's subject line: Exhaust Valves. It names the Continental E-185-11, Continental E165 series, Continental E185-1, Continental E185-9, Continental E185 series, Continental E225-4, Continental E225-8, Continental E225 series, Continental O-470-11, Continental O-470-13A, Continental O-470-15, Continental O-470-4, Continental O-470-A, Continental O-470-G, Continental O-470-J, Continental O-470-K, Continental O-470-L, Continental O-470-M, Continental O-470-P, Continental O-470-S, Continental O-470 series, Continental O-470-U, Continental O-470R engines: about 15,142 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: Continental Motors
Models: E165-2, E165-3, E165-4, E185-1, E185-10, E185-11, E185-2, E185-3, E185-5, E185-8, E185-9, E225-2, E225-4, E225-8, E225-9, O-470-11, O-470-11-CI, O-470-11B, O-470-11B-CI, O-470-13, O-470-13A, O-470-15, O-470-2, O-470-4, O-470-A, O-470-B, O-470-B-CI, O-470-E, O-470-G, O-470-G-CI, O-470-H, O-470-J, O-470-K, O-470-K-CI, O-470-L, O-470-L-CI, O-470-M, O-470-M-CI, O-470-N, O-470-P, O-470-R, O-470-S, O-470-T, O-470-U
Engine series: Continental E-185-11 1 aircraft
Continental E165 series 8 aircraft
Continental E185-1 3 aircraft
Continental E185-9 1 aircraft
Continental E185 series 1,109 aircraft
Continental E225-4 7 aircraft
Continental E225-8 7 aircraft
Continental E225 series 979 aircraft
Continental O-470-11 4 aircraft
Continental O-470-13A 4 aircraft
Continental O-470-15 2 aircraft
Continental O-470-4 2 aircraft
Continental O-470-A 5 aircraft
Continental O-470-G 3 aircraft
Continental O-470-J 6 aircraft
Continental O-470-K 13 aircraft
Continental O-470-L 19 aircraft
Continental O-470-M 4 aircraft
Continental O-470-P 1 aircraft
Continental O-470-S 22 aircraft
Continental O-470 series 12,781 aircraft
Continental O-470-U 56 aircraft
Continental O-470R 105 aircraft

Dates and paperwork

In force since: December 31, 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 (1,014 characters)

63-15-01  CONTINENTAL:  Amdt. 592, as amended by Amendment 39-903. Applies to all E165, E185, E225, and O-470 Series Engines. (These engines may be installed in such aircraft as Beech 35 Series, Cessna 180, 182, 310 and Navion.) 

	Compliance required at next engine top overhaul, or overhaul, which occurs first. 

	Unless already accomplished in accordance with Continental Motors Corporation Service Bulletin No. M60-1 or AD 61-03-02, remove all exhaust valves CMC P/N 40651, 537844, 538997, or 539449, with or without revision letter suffix, and replace with exhaust valve P/N 626540.  Part Number 626540 may be identified by the following: 

	(a)  The basic part number with or without revision letter suffix on the combustion surface of the head, or 

	(b)  The letter "H" or a triangle stamped or etched 0.06 high on the valve stem between the keeper groove and the end of valve on valves manufactured prior to July 1967. 

	This supersedes AD 61-03-02. 

	Effective July 25, 1963.Revised December 31, 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 October 5, 2026. Connections as data: /graph/directive/63-15-01.json · aircraft systems.