Champ Lycoming AD summary through 2008

Bob Turner

Well-known member
#1
A/D Summary for Lycoming 320/360 engines Sept 15, 2008



Blue means O-320 only. Red means IO360 only. Black means both, and probably all. Only some apply to the AEIO (underlined) – one in italics applies only to AEIO - but the colors did not come through this paste-up, so maybe later if I have the incentive.


55-02-02 - Accessory Drive Gasket – not an engine out there that needs this now.

59-10-07 - Baffle Clamps

63-23-02 - Exhaust Valve stems – some camshafts.

64-16-05 - AC Fuel Pumps – modify to prevent loss of oil.

66-06-03 - Connecting Rods – related to manufacture date.

66-20-04 - Oil filter gasket & length of attach screws.

67-22-06 - Bendix injector diaphragms –

71-05-02 - Lubrication system – earlier engines modified with straight pin in main
bearing area, N/A by manufacture date?

71-11-02 - Tappets – Applies only to remanufactured engines 1965-1987.

73-23-01 - Piston pins – applies to s/n 9409 and up. N/A by S/N. (cracks due to factory
grinding process)

75-08-09 - Oil pump impeller and drive shaft replacement. This one re-appears later for
all Lycoming engines, and is usually C/W at overhaul.

75-09-15 - Injector flow divider gasket – usually C/W at overhaul.

78-12-08 - Oil Pump

78-12-09 - Crankshaft

78-23-10 - Center body bellows seal and tube bushing replacement (injection system)


79-04-05
- Injector regulator diaphragm

79-10-03R2 - Mounting Bracket Bolts

80-04-03R2 - Exhaust Valve lifters and springs

80-14-07 - Exhaust Valve spring seats

81-18-04 - S/S by 96-09-10

84-13-05 - The famous Crankshaft Flange AD – Aerobatic aircraft only.

87-10-06 - Rocker arms – check S/N and model suffix.

90-04-06
- Governor oil line and aluminum fittings

91-08-07 - Fuel Pumps on turbocharged engines – N/A

91-14-22 - S/S by 2004-10-14

92-12-05 - Piston Pin recall – see Lycoming SB#501 for S/N. Applies only to pins
supplied by Lycoming between Jun 19, 1991 and Aug 5 1991. Lycoming
P/N LW 14077. N/A

93-02-05 - S/S by 2002-26-01

93-11-11 - Fuel Pump – applies to AAI corp. overhauls – N/A

93-14-15 - Manifold pressure gauge – turbocharged engines only – N/A

95-07-01
- Connecting rod bolts – looking for bogus parts installed on or after Feb 15,
1994.

95-26-02 - Low octane damage – N/A by N-Number (believe it or not!)

96-09-10 - Oil pump impeller – hardened steel shaft and impeller –
Signoff of 81-18-04 is sufficient for this AD

96-23-03 - Fuel pump Diaphragms – applies to pumps installed after July 18, 1995, and
before Aug 14, 1996.

97-01-03
- S/S by 97-15-11

97-15-11 - Piston pins again – S/Ns in Lycoming bulletin, but applies only to engines
repaired after Dec 15, 1995.

98-02-08 - Crankshaft corrosion; applies to fixed-pitch installations 160 HP and above.

98-17-11 - Crankshaft cracks – applies only to cranks balanced by Nelson Balancing.
N/A

98-18-12 - S/S by 2003-14-03

00-18-33 - S/S by 2002-12-07

02-12-07 - Lycoming oil filter gaskets supplied after Apr 1999.

02-06-01 - Injector lines – this one is simple, but must be done annually.
Simple visual check; takes about two minutes.

03-14-03 - Lear Romec rotary fuel pumps. This is N/A by pump type.

04-10-14 - Prop strike A/D – this one is famous.

05-19-11 - Crankshafts supplied after Mar 1’99

05-26-10 - S/S by 2006-12-07

06-06-16 - Crankshafts supplied after Mar 1’99

06-10-21 - ECI Connecting rods –

06-12-07
- ECI Cylinder Assemblies –

06-20-09 - Crankshafts supplied after March 1’97 –

07-04-19 - Superior Cylinder assemblies – Not installed –

-------------------------------------

Accessories:

Most magnetos have lots of A/Ds. They need to be carefully watched. Last one on Slicks was 02-

Ignition key – almost all lightplanes A/D 76-07-12. Must be done and logged each
annual. Just turn the engine off with the ignition key. Needs to be entered
in log.

Props have ADs too – not so much fixed pitch, but almost all Constant Speed props.
 

aftCG

Well-known member
Location
Tacoma, WA
#2
What's an ignition key? I don't even know where the key to my door latch is.

My recurring ones are slick mags (500 hours) and exhaust (every annual).
My crank was replaced in 2004 ( log book pictures show something that looks like it was left in a farm field for 50 years even though it flew a few times per week at the time).