Parts · Engine

Crankcase

28 failure reports named the crankcase in the last ten years, 365 since 1995, most often on the Cessna 172 Skyhawk; the condition most often found was "cracked". 52 FAA approvals let 5 companies make a replacement crankcase, Ram Aircraft Limited Partnership holding the most (27).

Reports by year

Reports by year, as a table

	reports
1995	24
1996	38
1997	42
1998	31
1999	18
2000	13
2001	22
2002	16
2003	27
2004	16
2005	15
2006	11
2007	4
2008	5
2009	17
2010	8
2011	5
2012	7
2013	9
2014	3
2015	6
2016	4
2017	1
2019	4
2020	1
2021	2
2022	2
2023	2
2024	1
2025	2
2026	9

Which system the reports file it under last ten years

Engine28

Reports by system, as a table

	reports
Engine	28

Models most often reporting it last ten years

Cessna 172 Skyhawk9Cessna U206 Stationair2Diamond Aircraft DA 42 Twin Star2Beechcraft A36 Bonanza1Beechcraft E351Beechcraft V35 Bonanza1Cessna 3401Cessna 4021Cessna T-3101Cirrus SR221Costruzioni Aeronautiche Tecna P20121Piper PA-28 Cherokee, Warrior, Archer and Arrow1

Models most reported, as a table

	reports
Cessna 172 Skyhawk	9
Cessna U206 Stationair	2
Diamond Aircraft DA 42 Twin Star	2
Beechcraft A36 Bonanza	1
Beechcraft E35	1
Beechcraft V35 Bonanza	1
Cessna 340	1
Cessna 402	1
Cessna T-310	1
Cirrus SR22	1
Costruzioni Aeronautiche Tecna P2012	1
Piper PA-28 Cherokee, Warrior, Archer and Arrow	1

How it failed the condition found, last ten years

cracked12gouged8damaged1destroyed1failed1leaking1none1perforated1punctured1unknown1

Conditions found, as a table

	reports
cracked	12
gouged	8
damaged	1
destroyed	1
failed	1
leaking	1
none	1
perforated	1
punctured	1
unknown	1

Engines most often reporting it

Lycoming IO-360-L2A 8Continental IO-550-N 3Austro Engine E4P(series 2Continental IO-550-B 2Continental E185 series 1Continental IO-520-BA 1Continental TSIO-520-BB 1Continental TSIO-520-NB 1Continental TSIO-520-VB 1Lycoming LO-360-A1H6 1

Approved replacement parts 52 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a crankcase and sell it as an approved part for the models named. These are the companies holding such approvals for a crankcase:

Ram Aircraft Limited Partnership 27Superior Air Parts INC 8Airmotive Engineering CORP 7Continental Motors INC 5Continental Aerospace Technologies INC 5

Maker	Part	Replaces	Fits	Granted	Status
Continental Aerospace Technologies INC	Crankcase Assembly (Dynafocal Type 1 Mount, Narrow Deck) AEL65461-01 AEL65461-02...	LW-14516-S LW-14491-S LW-11303 78228 78220...	Lycoming O-320-D1A, D1B, D2A	2020-01-06	current
Continental Aerospace Technologies INC	Crankcase Assembly (Conical Mount, Narrow Deck) AEL65461-09 AEL65461-10...	LW-14575-S LW-14571-S LW-14559-S 78229 78226...	Lycoming O-320-no suffix, A1A, A1B	2020-01-06	current
Continental Aerospace Technologies INC	Crankcase Assembly (Dynafocal Type 2 Mount, Wide Deck) AEL65460-05 AEL65460-06...	LW-16054 LW-13816 LW-13815 LW-13811 LW-13810...	Lycoming IO-320-AI A, A2A, B1A	2020-01-06	current
Continental Aerospace Technologies INC	Crankcase Assembly (Dynafocal Type 2 Mount, Narrow Deck) AEL65461-05 AEL65461-06...	LW-14491-S 78221 76602 74189	Lycoming IO-320-A1A, A2A, B1A	2020-01-06	current
Continental Aerospace Technologies INC	Crankcase Assembly (Dynafocal Type 1 Mount, Wide Deck) AEL65460-01 AEL65460-02...	LW-18402-2 LW-18379 LW-18372 LW-15542 LW-13821...	Lycoming O-320-A2B, D1A, D1B	2020-01-06	current
Continental Motors INC	Crankcase Assembly (Conical Mount, Narrow Deck) AEL65461-09 AEL65461-10...	LW-14575-S LW-14571-S LW-14559-S 78229 78226...	Lycoming O-320-no suffix, A1A, A1B	2017-01-08	current
Continental Motors INC	Crankcase Assembly (Dynafocal Type 1 Mount, Narrow Deck) AEL65461-0l AEL65461-02...	LW-14516-S LW-14491-S LW-11303 78228 78220...	Lycoming O-320-D1A, D1B, D2A	2017-01-08	current
Continental Motors INC	Crankcase Assembly (Dynafocal Type 2 Mount, Narrow Deck) AEL65461-05 AEL65461-06...	LW-14491-S 78221 76602 74189	Lycoming IO-320-A1A, A2A, B1A	2017-01-08	current
Continental Motors INC	Crankcase Assembly (Dynafocal Type 1 Mount, Wide Deck) AEL65460-01 AEL65460-02...	LW-18402-2 LW-18379 LW-18372 LW-15542 LW-13821...	Lycoming O-320-A2B, D1A, D1B	2017-01-08	current
Continental Motors INC	Crankcase Assembly (Dynafocal Type 2 Mount, Wide Deck) AEL65460-05 AEL65460-06...	LW-16054 LW-13816 LW-13815 LW-13811 LW-13810...	Lycoming IO-320-AI A, A2A, B1A	2017-01-08	current
Superior Air Parts INC	Crankcase Assembly SL36850-W11	Textron Lycoming P/N LW-18399-1, LW-13822	Lycoming Engines IO-360-A1D6, -C1E6 IO-360-A1D6,...	2010-01-31	current
Airmotive Engineering CORP	Crankcase, Stud Assembly AEC653923-( )	654130-8, 654130-9, 654130-10, 654130-11,...	Teledyne Continental IO-520-B, BA, BB	2002-08-15	current
Airmotive Engineering CORP	Crankcase, Stud Assembly AEC653923-( )	642093, 642094, 642096, 642509, 643193,...	Teledyne Continental IO-520-B, BA, BB	2002-08-15	current
Airmotive Engineering CORP	Crankcase Assembly (Dynafocal Type 1 Mount, Narrow Deck) AEL65461-1, AEL65461-2,...	Lycoming LW-14516-S, LW-14491-S, LW-11303,...	Lycoming O-320-D1A, D1B, D2A	2001-05-30	current
Airmotive Engineering CORP	Crankcase Assembly (Conical Mount, Narrow Deck) AEL65461-9, AEL65461-10,...	Lycoming LW-14575-S, LW-14571-S, LW-14559-S,...	Lycoming O-320-No Suffix, A1A, A1B	2001-05-30	current
Airmotive Engineering CORP	Crankcase Assembly (Conical Mount, Wide Deck) AEL65460-9, AEL65460-10,...	Lycoming LW-18369, LW-13823, LW-13819,...	Lycoming O-320-No Suffix, A1A, A1B	2001-05-30	current
Airmotive Engineering CORP	Crankcase Assembly (Dynafocal Type 1 Mount, Wide Deck) AEL65460-1, AEL65460-2,...	Lycoming LW-18402-2, LW-18379, LW-18372,...	Lycoming O-320-A2B, D1A, D1B	2001-05-30	current
Airmotive Engineering CORP	Crankcase Assembly (Dynafocal Type 2 Mount, Narrow Deck) AEL65461-5, AEL65461-6,...	Lycoming LW-14419-S, 78221, 76602, 74189	Lycoming IO-320-A1A, A2A, B1A	2001-05-30	current
Superior Air Parts INC	Crankcase Assembly SL36800-N31	Textron Lycoming P/N LW-14571, 78226	Textron Lycoming O-320-B2A, -B2B, -B3A	2001-04-04	current
Superior Air Parts INC	Crankcase Assembly SL36800-W21	Textron Lycoming P/N LW-13810, LW-13811,...	Textron Lycoming HIO-360-C1A, -C1B IO-320-B1A, -B1C	2001-04-04	current
Superior Air Parts INC	Crankcase Assembly SL36800-W12	Textron Lycoming P/N LW-18379, 78206	Textron Lycoming O-320-E2D, -E2G, -E2H	2001-04-04	current
Superior Air Parts INC	Crankcase Assembly SL36800-W13	Textron Lycoming P/N 11B20061-1SH(-S)...	Textron Lycoming IO-360-B4A O-360-A4A, -A4G, -A4J	2001-04-04	current
Superior Air Parts INC	Crankcase Assembly SL36800-Wll	Textron Lycoming P/N 11B20061-1SL (-S),...	Textron Lycoming AEIO-360-B1G6 IO-320-D1A IO-360-A1A,...	2001-04-04	current
Superior Air Parts INC	Crankcase Assembly SL36800-Nll	Textron Lycoming P/N LW-14491, 78228	Textron Lycoming IO-360-A1A, -B1A, -B1B O-320-D1A	2001-04-04	current
Superior Air Parts INC	Crankcase Assembly SL36800-W31	Textron Lycoming P/N 11B20061-3SL (-S),...	Textron Lycoming AEIO-360-H1A IO320-E1A, -E1B, -E2A O-320-A2B	2001-04-04	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-2 5	Teledyne Continental Part Number 643199	Teledyne Continental 10-520, BA, BB	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-18	Teledyne Continental Part Number 642507	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-14	Teledyne Continental Part Number 642035	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-12	Teledyne Continental Part Number 641198	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-17	Teledyne Continental Part Number 643989	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-16	Teledyne Continental Part Number 642331	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-13	Teledyne Continental Part Number 642185	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-6	Teledyne Continental Part Number 642096	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-30	Teledyne Continental Part Number 642158A1	Teledyne Continental 10-520, BA, BB	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-7	Teledyne Continental Part Number 643207	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-5	Teledyne Continental Part Number 643212	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-9	Teledyne Continental Part Number 643208	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-2	Teledyne Continental Part Number 642094	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-10	Teledyne Continental Part Number 643193	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-1	Teledyne Continental Part Number 643202	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-24	Teledyne Continental Part Number 643203	Teledyne Continental 10-520, BA, BB	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-23	Teledyne Continental Part Number 643196	Teledyne Continental 10-520, BA, BB	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-26	Teledyne Continental Part Number 643204	Teledyne Continental 10-520, BA, BB	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-29	Teledyne Continental Part Number 642187A1	Teledyne Continental 10-520, BA, BB	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-15	Teledyne Continental Part Number 643991	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-28	Teledyne Continental Part Number 643205	Teledyne Continental 10-520, BA, BB	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-27	Teledyne Continental Part Number 643200	Teledyne Continental 10-520, BA, BB	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-31	Teledyne Continental Part Number 642532A1	Teledyne Continental 10-520, BA, BB	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-4	Teledyne Continental Part Number 642093	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-3	Teledyne Continental Part Number 643201	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-11	Teledyne Continental Part Number 642165	Teledyne Continental TSIO-520, B, E	1988-02-21	current
Ram Aircraft Limited Partnership	Crankcase RAM Aircraft Part Number 1157-8	Teledyne Continental Part Number 643206	Teledyne Continental TSIO-520, B, E	1988-02-21	current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.