# Service difficulty reports: Piper PA-12

A list on [Piper PA-12](https://openairdocs.org/model/piper-pa-12.md).

Newest first. General aviation reporting is voluntary.

- [SDR FE6R202507220001](https://openairdocs.org/sdr/FE6R202507220001.md): Mount · chafed · Jun 24, 2025 · N344W · Piper PA12 · Engine Mount Section
  > DURING THE ANNUAL INSPECTION CHAFING ON THE LOWER LEFT PORTION OF THE ENGINE MOUNT WAS DISCOVERED. THE CHAFING APPEARED TO BE CAUSED BY THE DRAIN TUBE MOUNTED ON IT. NDT WAS CONSULTED AND DETERMINED THE CHAFE TO BE.046" AT ITS LOWEST WITH THE NOMINAL THICKNES
- [SDR CA190619001](https://openairdocs.org/sdr/CA190619001.md): Cable · separated · May 13, 2019 · Piper PA12 · Power Lever
  > (CAN) THROTTLE REPORTED LOOSE. INSPECTED AND FOUND THROTTLE CABLE SEPARATED WHERE SLEEVE CRIMPS ON THE FLEXIBLE SHAFT. (TC# 20190619001)
- [SDR CA190304019](https://openairdocs.org/sdr/CA190304019.md): Support · cracked · Mar 1, 2019 · Piper PA12 · Reciprocating Engine Front Section
  > (CAN) WHILE INSPECTING AT ANNUAL ONE OF THE AMES NOTICED AN ODD LINE THAT LOOKED LIKE A CRACK ON THE STARTER RING GEAR SUPPORT. HAD COMPANY PERFORM NDT AND A 4 INCH CRACK WAS FOUND AT THE SUSPECTED SPOT ALSO A SMALLER CRACK IN ANOTHER SPOT.
- [SDR 2010FA0000153](https://openairdocs.org/sdr/2010FA0000153.md): Cylinder · cracked · Jan 31, 2010 · N3222M · Piper PA12 · Reciprocating Engine Cylinder Section
  > CYLINDER SN 37316-30 WAS PRESSURE TEST INSPECTED IAW AD 2009-26-12 AND WAS FOUND TO BE CRACKED WHERE CYLINDER HEAD CONNECTS TO CYLINDER BARREL. THE DEFECTIVE CYLINDER IN THE NR 3 POSITION, WAS INSTALLED ON ENGINE ON 5/19/2006 AND HAD 397 HOURS IN SERVICE. CY
- [SDR 2009FA0000976](https://openairdocs.org/sdr/2009FA0000976.md): Cylinder · worn · Oct 5, 2009 · N7667H · Piper PA12 · Reciprocating Engine Cylinder Section
  > THIS ENG WAS O/H IN MAR 2007 AND CURRENTLY HAS 237.3 HRS SINCE O/H. THE MATERIAL AT LWR END OF THE INTAKE VALVE KEYS WORE AWAY ALLOWING THE UPPER VALVE SPRING SEAT TO MOVE TOO HIGH ON THE VALVE STEM. THIS CAUSED THE ROCKER ARM TIP TO WEAR ABNORMALLY RESULTIN
- [SDR CA070917006](https://openairdocs.org/sdr/CA070917006.md): Throttle Cable · failed · Sep 12, 2007 · Piper PA12 · Power Lever
  > (CAN) AIRCRAFT ON FLOATS. PILOT DEPARTED RIVER AND WHEN THE PILOT PULLED THE ENGINE BACK THE RPM WOULD NOT RETARD. PILOT TURNED ONE MAG OFF AND HELD THE AIRCRAFT NOSE UP TO PREVENT ENGINE OVER-SPEED AND RETURNED TO STARTING POINT. PILOT PULLED MIXTURE WHEN HE
- [SDR CA060227015](https://openairdocs.org/sdr/CA060227015.md): Mount · failed · Feb 23, 2006 · Piper PA12 · Wing, Attach Fittings
  > FLAP PULLEY MOUNT INSTALLED IN AFT FUSELAGE CABIN AS PER STC SA578AL AT UNKNOWN TIME, FAILED IN FLIGHT. MOUNT WAS WELDED TO FUSELAGE BRACE TUBE 5/8".035 WALL. TUBING FATIGUED AROUND WELD AND PULLEY MOUNT SHIFTED CAUSING MISALIGNMENT OF PULLEY TO CABLE. THIS
- [SDR CA050831001](https://openairdocs.org/sdr/CA050831001.md): Capacitor · failed · Aug 29, 2005 · Piper PA12 · Magneto/Distributor
  > (CAN) PILOT REPORTED IGNITION PROBLEMS WHEN OPERATING ENGINE ON RIGHT HAND MAGNETO. ALL IGNITION COMPONENTS INSPECTED AND TESTED INCLUDING CAPACITOR. CAPACITOR ELECTRICALLY TESTED TO 0.358 MICRO FARADS. THIS VALUE IS ABOVE THE MAINTENANCE VALUE OF A 0.300 M
- [SDR 2005FA0001394](https://openairdocs.org/sdr/2005FA0001394.md): Elt · weak · Jul 18, 2005 · N7689H · Piper PA12 · Emergency Locator Beacon
  > ELT TRANSMISSION WAS VERY WEAK. INSTALLED IN AC FOR LESS THAN 3 YEARS. INSTALLED 10/18/01. REMOVED 09/10/04. (K)
- [SDR 2005FA0000670](https://openairdocs.org/sdr/2005FA0000670.md): Gear · broken · Apr 26, 2005 · N92732 · Piper PA12 · Turbine Engine Oil System
  > ENGINE LOST POWER FOR UNKNOWN REASONS. ENGINE WAS DISASSEMBLED AND INSPECTED. INVESTIGATION FOUND BROKEN DRIVE DOGS ON THE OIL PUMP GEAR, AS WELL AS GEAR TEETH ON THE CRANKSHAFT GEAR AND OUTSIDE DIAMETER OF THE CAM GEAR. THE REASON FOR THE FAILURE OF THE OI
- [SDR CA040113010](https://openairdocs.org/sdr/CA040113010.md): Seal · worn · Jan 8, 2004 · Piper PA12 · Magneto/Distributor
  > (CAN) ENGINE OIL IN RT MAGNETO SEAL P/N 10-400554 LIP WORN FLAT. SLEEVE P/N 10-357078 APPEARS TO BE OF SINTERED IRON NOT STEEL AS SINTERED IRON AND SINTERED BRASS SLEEVES WERE OBSOLETED MANY YEARS AGO. FIVE NEW SLEEVES IN STOCK ALSO APPEAR TO BE SINTERED IRON
- [SDR 2003FA0000569](https://openairdocs.org/sdr/2003FA0000569.md): Wire · broken · May 25, 2003 · Piper PA12 · Electrical Power System Wiring
  > LEFT UPPER TAIL BRACE WIRE BROKE ABOUT ONE HALF IT'S LENGTH, DURING CLIMB.
- [SDR WP012001B1728](https://openairdocs.org/sdr/WP012001B1728.md): Tire · mismanufactured · Jan 2, 2001 · N3021M · Piper PA12 · Tire
  > MOUNTED TWO GOODYEAR 8.50 X 6 6PR TIRES, PN856C61-3, ON CLEVELAND WHEELS. ONE TIRE APPEARED LARGER IN DIAMETER THAN THE OTHER. MEASURED BOTH TIRES, AT 25PSI ONE TIRE IS 20.1250 AND THE OTHER IS 20.9375 IN DIAMETER.
- [SDR 2000ZZZX580](https://openairdocs.org/sdr/2000ZZZX580.md): Pulley · worn · Feb 1, 2000 · N3168M · Piper PA12 · Elevator Tab Control System
  > FOUND TRIM PULLEY AND SHAFT HAD WORN EXCESSIVELY INTO BRACKETS. WELDED TO AIRCRAFT (THIS IS TRIM CRANK IN COCKPIT) CAUSED TRIM TO BIND UP.
- [SDR 98ZZZX4496](https://openairdocs.org/sdr/98ZZZX4496.md): Flex Line · failed · Nov 5, 1998 · N4437M · Piper PA12 · Engine Fuel Distribution
  > REPLACED HOSE AT FUEL TANK BECAUSE OF AGB. REPLACED HOSE WAS MADE UP OF MIL-H-6000, DATED 12-95. EIGHTEEN MONTHS AFTER INSTALLATION, HOSE BECAME SOFT, DETERIORATED AND FAILED. SUBMITTER STATED THIS IS SECOND HOSE OF.3750 INCH SIZE TO FAIL IN THIS AREA OR L
- [SDR 98ZZZX3880](https://openairdocs.org/sdr/98ZZZX3880.md): Struts · cracked · Sep 3, 1998 · N3624M · Piper PA12 · Wing Structure
  > PARA 'A' OF AD NOTE 93-10-06 C/W USING AN FAA APPROVED X-RAY METHOD. LT FRONT STRUT AIRWORTHY. LT REAR STRUT UNAIRWORTHY. RT FRONT STRUT AIRWORTHY. RT REAR STRUT UNAIRWORTHY. X-RAYS ARE ON FILE AT THIS REP STA UNDER W/O NR A-2831. SUBMITTER STATED UNAIRW
- [SDR 98ZZZX3190](https://openairdocs.org/sdr/98ZZZX3190.md): Rudder · damaged · Aug 6, 1998 · N2657M · Piper PA12 · Rudder Structure
  > BOTTOM RUDDER HINGE BLOCK. WELD BROKEN ON LEFT SIDE AND BARELY ATTACHED ON RT SIDE. SUSPECT WIND DAMAGE.
- [SDR CA970728004](https://openairdocs.org/sdr/CA970728004.md): Breaker Points · broken · Jul 17, 1997 · Piper PA12 · Magneto/Distributor
  > (CAN) ENGINE RUNNING ROUGH ON TAXI. CAM FOLLOWER OF POINTS ASSEMBLY FOUND BROKEN. THIS IS THE SECOND SET OF POINTS TO FAIL WITH THE SAME CONDITION, IN THE SAME MAGNETO, WITHIN 100 HOURS OF OPERATION. CLOSER INSPECTION FOR PROBABLE CAUSE FOUND NOTCHES IN THE CA
- [SDR 97ZZZX2788](https://openairdocs.org/sdr/97ZZZX2788.md): Bellcrank · cracked · May 1, 1997 · Piper PA12 · Aileron Control System
  > INSPECTION FOUND LT AILERON BELLCRANK CRACKED. REF: PIPER SB 109.
- [SDR 97ZZZX2783](https://openairdocs.org/sdr/97ZZZX2783.md): Bellcrank · cracked · May 1, 1997 · Piper PA12 · Trailing Edge Flap Control System
  > INSPECTION FOUND LT FLAP BELLCRANK CRACKED. REF: PIPER SB 109.
- [SDR 99ZZZX960](https://openairdocs.org/sdr/99ZZZX960.md): Elt · failed · Mar 7, 1997 · N3168M · Piper PA12 · Emergency Locator Beacon
  > ELT DID NOT FUNCTION DURING 100-HOUR CHECK. DECELERATION CHECK PER MANUAL; ALSO, HAD LOOSE SCREW INSIDE SEALED ELT ELECTRONIC HEAD WHICH WAS REPAIRED BY THE MFG.
- [SDR 96ZZZX5124](https://openairdocs.org/sdr/96ZZZX5124.md): Mount · cracked · Sep 16, 1996 · N98922 · Piper PA12 · Engine Mount Section
  > AT ANNUAL INSPECTION, BOTTOM LEFT ENGINE MOUNT TUBE WAS FOUND CRACKED AT ENGINE MOUNTING FLANGE. ENGINE PREVIOUSLY CHANGED TO LYC 0320 IN C/W STC SA-4-456. REINFORCEMENT TUBING HAD NOT BEEN EXTENDED FULL LENGTH ON BOTTOM TUBE. WELDED LENGTH OF.8750 INCH TU
- [SDR 96ZZZX3796](https://openairdocs.org/sdr/96ZZZX3796.md): Lift Strut · corroded · Jul 10, 1996 · N3155M · Piper PA12 · Wing Structure
  > INSPECTION FOUND RIGHT REAR STRUT WITH LARGE AMOUNT OF CORROSION, LOWER 15 INCHES OF STRUT. DENSITY CHECK: COMPARITOR SHIM = 3.69 H.D., CORROSION = 4.23 H.D.
- [SDR 96ZZZX2373](https://openairdocs.org/sdr/96ZZZX2373.md): Lift Strut · defective · Apr 10, 1996 · N2526M · Piper PA12 · Wing Structure
  > PARAGRAPH 'A' OF AD NOTE 93-10-06 HAS BEEN ACCOMPLISHED USING AN FAA APPROVED X-RAY METHOD. REMARKS: LT FRONT STRUT AIRWORTHY, LT REAR STRUT UNAIRWORTHY, RT FRONT STRUT AIRWORTHY, RT REAR STRUT AIRWORTHY. X-RAYS ARE ON FILE AT THIS REPAIR STATION.
- [SDR 96ZZZX676](https://openairdocs.org/sdr/96ZZZX676.md): Hinge Fitting · cracked · Jan 13, 1996 · N7561H · Piper PA12 · Ailerons
  > DURING INSPECTION, CRACKS WERE NOTED IN RADIUS OF FITTING ATTACHED TO AILERON SPAR. SUBMITTER SUSPECTS CAUSE IS POOR ALIGNMENT OF AILERON ATTACH FITTINGS THROUGH FALSE SPAR AFTER C/W AD 51-21-02 OR, SIMPLY, WEAK AREA IN DESIGN OF AILERON FITTING.
- [SDR 96ZZZX675](https://openairdocs.org/sdr/96ZZZX675.md): Hinge Fitting · cracked · Jan 13, 1996 · N7561H · Piper PA12 · Ailerons
  > DURING INSPECTION, CRACKS WERE NOTED IN RADIUS OF FITTING ATTACHED TO AILERON SPAR. SUBMITTER SUSPECT CAUSE IS POOR ALIGNMENT OF AILERON ATTACH FITTINGS THROUGH FALSE SPAR AFTER C/W AD 51-21-02 OR, SIMPLY, WEAK AREA IN DESIGN OF AILERON FITTING.
- [SDR 95ZZZX5604](https://openairdocs.org/sdr/95ZZZX5604.md): Longeron · corroded · Sep 1, 1995 · N7682H · Piper PA12 · Fuselage Main, Longeron/Stringer
  > INSPECTION FOUND A LOWER LONGERON CLUSTER ON THE RIGHT SIDE OF THE FUSELAGE, JUST BENEATH THE BATTERY COMPARTMENT, HAS BEEN BADLY DAMAGED BY CORROSION. SUSPECT CAUSE WOULD BE FROM BATTERY ACID DRIPPING IN THIS AREA FOR SOME TIME.
- [SDR 95ZZZX6069](https://openairdocs.org/sdr/95ZZZX6069.md): Spar · broken · Jul 8, 1995 · N3297M · Piper PA12 · Elevator, Spar/Rib
  > AIRCRAFT MODIFIED TO USE BALANCED PA-18 TAIL SURFACES. AIRCRAFT WAS COMPLETELY RECOVERED APPROX 30 HOURS PRIOR. UPON EXITING AIRCRAFT AFTER A ROUTINE FLIGHT, LEFT ELEVATOR WAS FOUND BENT DOWNWARD APPROX 35 DEGREES OUTBOARD OF THE OUTERMOST HINGE. UPON EXAMI
- [SDR 96ZZZX92](https://openairdocs.org/sdr/96ZZZX92.md): Battery · cracked · Jun 14, 1995 · N3168M · Piper PA12 · Emergency Locator Beacon
  > ELT BATTERY ARTEX WAS FOUND CRACKED ON LOWER SIDE UPON DISASSEMBLY OF ELT. BATTERY EXPIRATION DATE IS JANUARY '96. ELT EXHIBITED CORROSION DAMAGE TO LOWER CIRCUIT BOARD AND WAS INOPERATIVE.
- [SDR 95ZZZX633](https://openairdocs.org/sdr/95ZZZX633.md): Bail · broke · Jan 25, 1995 · N2820M · Piper PA12 · Aircraft Fuel Filter/Strainer
  > THE BAIL, WHICH HOLDS THE GASCOLATOR BOWL ON, BROKE IN-FLIGHT FROM POSSIBLY A CRACK THAT DEVELOPED AT THE T-SECTION. THIS CRACK COULD NOT BE SEEN BECAUSE OF ITS PLACEMENT. RECOMMENDATION IS TO REPLACE BAIL WITH A BETTER ENGINEERED PART OR REPLACE EVERY 30 YE

## 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 = 'PA12'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/piper-pa-12/reports

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