# Service difficulty reports: Cessna 150H

A list on [Cessna 150H](https://openairdocs.org/model/cessna-150h.md).

Newest first. General aviation reporting is voluntary.

- [SDR 2025FA0000265](https://openairdocs.org/sdr/2025FA0000265.md): Magneto · defective · Apr 12, 2025 · N7144S · Cessna 150H · Magneto/Distributor
  > LARGE MAG DROP ON RUNUP THAT WAS SIGNIFICANT ENOUGH TO ALMOST SHUT DOWN THE ENGINE. MAGNETO HAD 568.9 HOURS SINCE INSTALLATION ON THE ENGINE, AND WAS INSTALLED 10 MONTHS AGO.
- [SDR 2022FA0000726](https://openairdocs.org/sdr/2022FA0000726.md): Exhaust Valve · stuck · Nov 23, 2022 · N69685 · Cessna 150H · Reciprocating Engine Cylinder Section
  > ENGINE ROUGH RUNNING DURING TAKE OFF RUN UP. COMPRESSION TEST FOUND #4 CYLINDER LOW. REMOVED CYLINDER FOUND EXHAUST VALVE STUCK OPEN. REMOVED VALVE, CLEANED GUIDE OF CARBON BUILDUP, RE-ASSEMBLED, RE-INSTALLED, OPERATES SATISFACTORY.
- [SDR 2016FA0000400](https://openairdocs.org/sdr/2016FA0000400.md): Bracket · cracked · Aug 31, 2016 · N22172 · Cessna 150H · Horizontal Stabilizer Miscellaneous Structure
  > DURING THE INSPECTION OF AD80-11-04-MFG INSPECTION OF VERTICAL AND HORIZONTAL STABILIZER NUT PLATES, PARA A, MFG PN 0432004-9, PARTS MANUAL, P438-12 RAND-400-3-72 DATED 15 JANUARY 1970, FIG 9, ITEM 6, PN 0432004-1. DURING INSPECTION, THE NUTPLATES WERE INTACT
- [SDR CA091007004](https://openairdocs.org/sdr/CA091007004.md): Retainer · unserviceable · Oct 7, 2009 · Cessna 150H · DC Generator-Alternator
  > (CAN) RETAINER WHICH HOUSES THE 2 RUBBER BUSHINGS (632050) HAS WORN TO THE POINT WHERE DRIVE GEAR HAS ROTATED ALMOST 60 DEGREES WITHIN RETAINER. THIS CONSEQUENTLY CONTAMINATED ENG WITH FERROUS MATERIAL. ENG IS BEING REPAIRED FOR METAL CONTAMINATION.
- [SDR CA090612004](https://openairdocs.org/sdr/CA090612004.md): Housing · cracked · Jun 12, 2009 · Cessna 150H · Reciprocating Engine Oil System
  > (CAN) DURING GROUND RUN AFTER ANNUAL INSP OIL APPEARED ON THE WINDSHIELD SHORTLY AFTER STARTING. ENG WAS SHUTDOWN WITH NO FURTHER DAMAGE AND THE UPPER LT FLANGE OF THE OIL PRESSURE SCREEN HSG WAS FOUND TO BE CRACKED. UPON REMOVAL OF THE HSG THE FLANGE DEPART
- [SDR CA090403009](https://openairdocs.org/sdr/CA090403009.md): Hub · corroded · Apr 3, 2009 · Cessna 150H · Propeller Hub Section
  > (CAN) HUB BUSHING BORES CORRODED BEYOND REPAIR. PROP IS SCRAP.
- [SDR CA090331004](https://openairdocs.org/sdr/CA090331004.md): Screw · missing · Mar 20, 2009 · Cessna 150H · Aileron Control System
  > (CAN) THE PILOT NOTED HIS AILERON CONTROLS WERE SLUGGISH DURING FLIGHT AND THE CONTROL WHEEL WAS OFF CENTER DURING LEVEL FLIGHT. DURING ROUTINE INSPECTION, IT WAS FOUND THAT THE UPPER AILERON PULLEY BRACKET SCREW AND NUT WERE MISSING. THE PULLEY BRACKET WAS SL
- [SDR 2008FA0000596](https://openairdocs.org/sdr/2008FA0000596.md): Muffler · failed · Aug 21, 2008 · N22355 · Cessna 150H · Engine Noise Suppressor
  > END CAP SEPARATED (CLEAR BREAK) FROM MUFFLER CAR. FAILURE OCCURED IN THE BEND RADIAS OF END CAP. NOT IN THE END CAP TO MUFFLER CAP, WELD. (K)
- [SDR CA080123001](https://openairdocs.org/sdr/CA080123001.md): Cylinder · leaking · Jan 19, 2008 · Cessna 150H · Reciprocating Engine Cylinder Section
  > (CAN) WHILE CARRYING OUT MAINT, CYLINDER NR 4 WAS FOUND LOW ON COMPRESSION 45/80. AIR WAS LEAKING THROUGH THE EXHAUST. (TC NR 20080123001)
- [SDR CA070910001](https://openairdocs.org/sdr/CA070910001.md): Propeller · corroded · Sep 7, 2007 · Cessna 150H · Propeller Assembly
  > (CAN) WHILE PERFORMING A 5 YEAR CORROSION INSPECTION ON SUBJECT PROPELLER IAW CAR 625 APPENDIX C, PARA.5, CORROSION WAS NOTED IN THE MOUNTING HOLE BORE. IN CONSULTATION WITH THE PROPELLER OVERHAUL AMO, IT WAS DECIDED TO SEND IT TO THEM FOR FURTHER EVALUATION.
- [SDR CA070813003](https://openairdocs.org/sdr/CA070813003.md): Piston · worn · Jul 19, 2007 · Cessna 150H · Reciprocating Engine Power Section
  > (CAN) TOP RING BROKEN. ALL CYLINDERS REPLACED WITH NEW CYLINDER, PISTONS RINGS VALVES. COMPRESSION TEST AT INSPECTION ON MIN - 60 OVER 80. (TC NR 20070813003)
- [SDR CA070226006](https://openairdocs.org/sdr/CA070226006.md): Camshaft · worn · Feb 19, 2007 · Cessna 150H · Reciprocating Engine Power Section
  > (CAN) EXCESSIVE WEAR ON NR 1 AND NR 2 INTAKE LOBE. CAUSED EXCESSIVE PITTING ON ALL LIFTER BODY ASSEMBLIES. (TC NR 20070226006)
- [SDR CA061017007](https://openairdocs.org/sdr/CA061017007.md): Bulkhead · cracked · Oct 17, 2006 · Cessna 150H · Propeller Spinner Section
  > (CAN) ON PILOT WALK AROUND THE SPINNER ASSY WAS NOTED TO BE LOOSE. UPON INSPECTION IT WAS OBSERVED THAT THE FWD SPINNER BULKHEAD WAS CRACKED. THIS WAS MOST LIKELY CAUSED BY PILOTS PUSHING ON THE SPINNER WHEN GROUND HANDLING THE AIRCRAFT. (TC NR 20061017007)
- [SDR CA070207004](https://openairdocs.org/sdr/CA070207004.md): Valve · stuck · Mar 3, 2006 · Cessna 150H · Reciprocating Engine Cylinder Section
  > (CAN) STUCK VALVE - ENGINE WAS ROUGH RUNNING. FOUND TO BE A STUCK VALVE. (TC NR 20070207004)
- [SDR CA060316009](https://openairdocs.org/sdr/CA060316009.md): Exhaust Valve · sticks · Mar 1, 2006 · Cessna 150H · Reciprocating Engine Cylinder Section
  > EXHAUST VALVE STICKY.
- [SDR AU510001800](https://openairdocs.org/sdr/AU510001800.md): Stiffener · corroded · Dec 12, 2005 · Cessna 150H · Fuselage Miscellaneous Structure
  > (AUS) LT LANDING GEAR GEAR ATTACHMENT SADDLE (STIFFENER) CORRODED IN AFT LOWER SECTION. EVIDENCE OF DELAMINATION THROUGH THE FULL HEIGHT OF THE LOWER SECTION. SEE ATTACHMENT FOR PHOTOGRAPHS OF DEFECT. (CASA NR 510001800)
- [SDR DHF2005F00000](https://openairdocs.org/sdr/DHF2005F00000.md): Exhaust Valve · failed · Oct 4, 2004 · N22254 · Cessna 150H · Reciprocating Engine Cylinder Section
  > ENGINE LOST POWER, AND AN UNEVENTFUL FORCED LANDING WAS MADE. 0 LBS COMPRESSION ON NR 4 CYLINDER. INSPECTION REVEALED THAT THE MFG PN 75068, EXHAUST VALVE STEM/ FAILED. (NM07200501219)
- [SDR CA030331007](https://openairdocs.org/sdr/CA030331007.md): Exhaust Valve · stuck · Mar 20, 2003 · Cessna 150H · Reciprocating Engine Cylinder Section
  > (CAN) PILOT REPORT OF INTERMITTENT ENGINE ROUGH RUNNING. NR 4 EXHAUST VALVE FOUND STICKY. GUIDE AND STEM CLEANED. GROUND RUN SATISFACTORY.
- [SDR 2002FA0001187](https://openairdocs.org/sdr/2002FA0001187.md): Adapter · missing · Sep 23, 2002 · N22159 · Cessna 150H · Magneto/Distributor
  > PULLED THE MAGNETOS FOR INSPECTION, AND FOUND THAT THE RT MAGNETO DRIVE ADAPTER HAS SOME DAMAGED BEARINGS. PULLED THE DRIVE ADAPTER, AND FOUND THAT PIECES OF THE BEARING CAGE WERE MISSING, AND THE BEARINGS WEREN`T SPACED PROPERLY. PULLED THE OIL FILTER, SCRE
- [SDR AUS20011078](https://openairdocs.org/sdr/AUS20011078.md): Cylinder · cracked · Oct 10, 2001 · Cessna 150H · Reciprocating Engine Cylinder Section
  > (AUS) NR 2 CYLINDER CRACKED FOR APPROXIMATELY 80 PERCENT OF CIRCUMFERENCE ATTHE BASE OF THE THREAD ON THE CYLINDER BARREL BETWEEN THE TOP BARREL FIN AND THE BOTTOM FIN ON THE CYLINDER HEAD.
- [SDR CA010115003](https://openairdocs.org/sdr/CA010115003.md): Warning System · activated · Dec 9, 2000 · Cessna 150H · Door Warning System
  > (CAN) PASSENGER DOOR OUTER HANDLE CAUTION AT 8000 FEET, QUICK REFERENCE HANDBOOK PROCEDURE CARRIED OUT, UNSUCCESSFULLY, THEN RED WARNING DOOR MESSAGE CAME ON.PASSENGER DOOR RIGGING CARRIED OUT.
- [SDR 20000907SH016](https://openairdocs.org/sdr/20000907SH016.md): Flange · damaged · Aug 22, 2000 · N6665S · Cessna 150H · Propeller Assembly
  > PROPELLER SUBMITTER FOR REPAIR. DURING INSPECTION, DISCOVERED THE PROPELLER MOUNTING SURFACE WAS NOT FLAT AND APPEARED TO HAVE BEEN NOT SEATING PROPERLY ON THE ENGINE CRANKSHAFT. SUBMITTER STATED IT APPEARED THE PROPELLER FLANGE HAD BEEN HEAVILY GROUND OR SA
- [SDR 20000531SH021](https://openairdocs.org/sdr/20000531SH021.md): Cylinder · broken · May 4, 2000 · N563G · Cessna 150H · Reciprocating Engine Cylinder Section
  > OWNER STATED ENGINE BEGAN RUNNING ROUGH. DEVIATED TO NEAREST AIRPORT. HAD TO KEEP PUMPING THROTTLE TO MAINTAIN ENGINE RUNNING. MADE PRECAUTIONARY LANDING AT AIRPORT. UPON COLD CYLINDER CHECK, REMOVED CYLINDER ROCKER BOSS COVER. PIN AND BOSSES FELL OUT. N
- [SDR CA981123003](https://openairdocs.org/sdr/CA981123003.md): Stiffener · corroded · Nov 9, 1998 · Cessna 150H · Fuselage Miscellaneous Structure
  > (CAN) INTERGRANULAR CORROSION FOUND ON THE TOP LEFT AND RIGHT SIDES OF THE STIFFENER. ONE SIDE HAD CRACKS FROM THE EXPANSION OF THE MATERIAL. THIS APPEARS TO BE EXTREMELY FAST ACTING AS NO PROBLEM HAD BEEN NOTED 3 MONTHS PRIOR. OTHER CORROSION ALSO FOUND ON
- [SDR 98ZZZX1082](https://openairdocs.org/sdr/98ZZZX1082.md): Engine · failed · Feb 27, 1998 · N6948S · Cessna 150H · Engine (Reciprocating)
  > ENGINE ASSY PRODUCING EXCESSIVE AMOUNTS OF METAL - MAIN OIL SCREEN. METAL CONTENT EXCESSIVE STEEL-BRONZE AND ALUMINUM. ENGINE RE-CHECK AFTER TWO ADDITIONAL GROUND RUNS. EXCESSIVE METAL PRESENT AFTER EACH RUN. CONTINENTAL ENGINE 0200A, 2,660.0 HRS TT.
- [SDR 97ZZZX2336](https://openairdocs.org/sdr/97ZZZX2336.md): Fitting · corroded · May 2, 1997 · N22172 · Cessna 150H · Vertical Stabilizer, Attach Fittings
  > INSPECTION FOUND VERTICAL FIN ATTACH FITTING WITH INTERGRANULAR CORROSION. SUBMITTER STATED SINCE THIS DEFECT IS CAUSED BY IMPROPER QUENCHING, THERE MAY BE MORE IN SERVICE THAT WERE HEAT TREATED IN THAT BATCH.
- [SDR 97ZZZX2335](https://openairdocs.org/sdr/97ZZZX2335.md): Fitting · corroded · May 2, 1997 · N22172 · Cessna 150H · Vertical Stabilizer, Attach Fittings
  > INSPECTION FOUND VERTICAL FIN ATTACH FITTING WITH INTERGRANULAR CORROSION. SUBMITTER STATED SINCE THIS DEFECT IS CAUSED BY IMPROPER QUENCHING, THERE MAY BE MORE IN SERVICE THAT WERE HEAT TREATED IN THAT BATCH.
- [SDR 97ZZZX571](https://openairdocs.org/sdr/97ZZZX571.md): Fitting · cracked · Jan 22, 1997 · N7046S · Cessna 150H · Wing, Fuselage Attach Fittings
  > REMOVED THE REAR WING SPAR ATTACH BLOCK FITTINGS, CESSNA P/N C512122, FROM EACH END OF THE REAR SPAR/DOORPOST CARRY-THROUGH CHANNEL FOR INSPECTION. AFTER CLEANING, IT WAS NOTED THE RIGHT FITTING WAS CORRODED AND CONTAINED A CRACK EXTENDING DIAGONALLY FROM THE
- [SDR 97ZZZX1316](https://openairdocs.org/sdr/97ZZZX1316.md): Bolt · failed · Oct 5, 1996 · N6741S · Cessna 150H · Reciprocating Engine Rear Section
  > THE ENGINE QUIT SUDDENLY IN CRUISE FLIGHT WITHOUT WARNING AND WOULD NOT RESPOND TO RESTART ATTEMPTS. A NORMAL LANDING WAS MADE IN A FARM FIELD. DISASSEMBLY INSPECTION INDICATED THE FOUR BOLTS (22532) USED TO SECURE THE CRANKSHAFT CLUSTER GEAR (35016) BROKE O
- [SDR 96ZZZX4057](https://openairdocs.org/sdr/96ZZZX4057.md): Drain Valve · corroded · Jul 20, 1996 · N6520S · Cessna 150H · Fuel Storage
  > THE RIGHT SIDE FUEL TANK SUMP DRAIN VALVE DIFFICULT TO CLOSE AFTER SUMPING FUEL TANK. FINALLY BECAME IMPOSSIBLE TO OPEN. REPLACED DRAIN VALVE. FOUND DRAIN VALVE CORRODED BETWEEN PLUNGER AND VALVE BODY. DRAIN VALVE NEEDS TO BE MORE CORROSION RESISTANT. THE
- [SDR 96ZZZX5445](https://openairdocs.org/sdr/96ZZZX5445.md): Fuse · blown · Jun 27, 1996 · N7260S · Cessna 150H · Trailing Edge Flap Control System
  > DURING A GO-AROUND, THE FLAPS WERE STUCK IN THE 40 DEGREE POSITION. THIS MALFUNCTION CAUSED THE PILOT TO MAKE AN EMERGENCY LANDING WHICH RESULTED IN AN ACCIDENT. AN INSPECTION OF THE FUSE FOR THE FLAP SYSTEM REVEALED CORROSION ON THE FUSE WHICH HAD CORRODED
- [SDR CA951206004](https://openairdocs.org/sdr/CA951206004.md): Gasket · failed · Dec 5, 1995 · Cessna 150H · Magneto/Distributor
  > (CAN)PILOT REPORTED HIGH MAG DROP DURING RUN-UP. MAGNETO WAS INSTALLED WITH THE WRONG GASKET RESULTING IN THE MAGNETO BEING LOOSE ON ITS MOUNT BASE AND CAUSING THE MAGNETO TO OPERATE OUT OF TIME. CORRECT GASKET SHOULD HAVE BEEN P/N 534750. N.B. THIS PROBLE
- [SDR 95ZZZX5746](https://openairdocs.org/sdr/95ZZZX5746.md): Rocker Arm · failed · Sep 26, 1995 · N50231 · Cessna 150H · Reciprocating Engine Cylinder Section
  > THE EXHAUST VALVE WAS NOT STUCK IN THE GUIDE. THE BUSHING HAD BEEN CHANGED IN THE ARM AT SOME TIME (OIL HOLE IS NOT LINED UP WITH OIL HOLE IN THE ARM). MAYBE THE BUSHING WAS TOO TIGHT OF A FIT.
- [SDR 95ZZZX1446](https://openairdocs.org/sdr/95ZZZX1446.md): Channel · corroded · Mar 8, 1995 · N6444S · Cessna 150H · Wing Miscellaneous Structure
  > DURING HIDDEN DAMAGE INSPECTION OF WINGS, CHANNEL FOUND BAD. PART REPLACED AND WING RETURNED TO SERVICE. RECOMMEND BETTER HEAT TREATING AND CORROSION PROTECTION DURING MANUFACTURE.
- [SDR 95ZZZX1445](https://openairdocs.org/sdr/95ZZZX1445.md): Channel · corroded · Mar 8, 1995 · N6444S · Cessna 150H · Wing Miscellaneous Structure
  > DURING HIDDEN DAMAGE INSPECTION OF WINGS, CHANNEL FOUND BAD. PART REPLACED AND WING RETURNED TO SERVICE. RECOMMEND BETTER HEAT TREATING AND CORROSION PROTECTION DURING MANUFACTURE.
- [SDR 95ZZZX1444](https://openairdocs.org/sdr/95ZZZX1444.md): Cap Angle · corroded · Mar 8, 1995 · N6444S · Cessna 150H · Wing Miscellaneous Structure
  > DURING HIDDEN DAMAGE INSPECTION OF WINGS, CAP ANGLE FOUND BAD. PART REPLACED AND WING RETURNED TO SERVICE. RECOMMEND BETTER HEAT TREATING AND CORROSION PROTECTION DURING MANUFACTURE.
- [SDR 95ZZZX1443](https://openairdocs.org/sdr/95ZZZX1443.md): Cap Plate · corroded · Mar 8, 1995 · N6444S · Cessna 150H · Wing Miscellaneous Structure
  > DURING HIDDEN DAMAGE INSPECTION OF WINGS, CAP PLATE FOUND BAD. PART REPLACED AND WING RETURNED TO SERVICE. RECOMMEND BETTER HEAT TREATING AND CORROSION PROTECTION DURING MANUFACTURE.
- [SDR 95ZZZX1442](https://openairdocs.org/sdr/95ZZZX1442.md): Channel · corroded · Mar 8, 1995 · N6444S · Cessna 150H · Wing Miscellaneous Structure
  > DURING HIDDEN DAMAGE INSPECTION OF WINGS, RT CHANNEL FOUND BAD. PART REPLACED AND WING RETURNED TO SERVICE. RECOMMEND BETTER HEAT TREATING AND CORROSION PROTECTION DURING MANUFACTURE.
- [SDR 95ZZZX1441](https://openairdocs.org/sdr/95ZZZX1441.md): Channel · corroded · Mar 8, 1995 · N6444S · Cessna 150H · Wing Miscellaneous Structure
  > DURING HIDDEN DAMAGE INSPECTION OF WINGS, CHANNEL FOUND BAD. PART REPLACED AND WING RETURNED TO SERVICE. RECOMMEND BETTER HEAT TREATING AND CORROSION PROTECTION DURING MANUFACTURE.
- [SDR 95ZZZX1440](https://openairdocs.org/sdr/95ZZZX1440.md): Angle · corroded · Mar 8, 1995 · N6444S · Cessna 150H · Wing Miscellaneous Structure
  > DURING HIDDEN DAMAGE INSPECTION OF WINGS, RT ANGLE FOUND BAD. PART REPLACED AND WING RETURNED TO SERVICE. RECOMMEND BETTER HEAT TREATING AND CORROSION PROTECTION DURING MANUFACTURE.
- [SDR 95ZZZX1439](https://openairdocs.org/sdr/95ZZZX1439.md): Angle · corroded · Mar 8, 1995 · N6444S · Cessna 150H · Wing Miscellaneous Structure
  > DURING HIDDEN DAMAGE INSPECTION OF WINGS, ANGLE FOUND BAD. PART WAS REPLACED AND WING RETURNED TO SERVICE. SUBMITTER RECOMMENDS BETTER HEAT TREATING AND CORROSION PROTECTION DURING MANUFACTURE.
- [SDR 95ZZZX1438](https://openairdocs.org/sdr/95ZZZX1438.md): Channel · corroded · Mar 8, 1995 · N6444S · Cessna 150H · Wing Miscellaneous Structure
  > DURING HIDDEN DAMAGE INSPECTION OF WINGS, LT CHANNEL FOUND BAD. PART REPLACED AND WING RETURNED TO SERVICE. RECOMMEND BETTER HEAT TREATING AND CORROSION PROTECTION DURING MANUFACTURE.

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
WHERE aircraft_model_key = '150H'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/cessna-150h/reports

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