Bob Turner
Well-known member
- Joined
- Apr 4, 2018
- Messages
- 3,998
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.
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.
