# Service difficulty reports: N3527U A list on [N3527U](https://openairdocs.org/aircraft/N3527U.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR 2010FA0000852](https://openairdocs.org/sdr/2010FA0000852.md): Camshaft · corroded · Aug 20, 2010 · N3527U · Piper PA31350 · Reciprocating Engine Power Section > EXCESSIVE CAM LOBE WEAR IS CAUSING POWER LOSS AND EARLY REMOVAL OF SEVERAL OF OUR ENGINES. THIS ENGINE WAS THE EARLIEST REMOVAL SO FAR, WITH 744 HOURS REMAINING UNTIL O/H. HAVE BEEN IN CONTACT WITH MFG TECH SUPPORT FOR AN EXTENDED PERIOD OF TIME NOW AND HAVE Y - [SDR WVB2006F00002](https://openairdocs.org/sdr/WVB2006F00002.md): Oil System · unknown · Jul 14, 2006 · N3527U · Piper PA31350 · Turbine Engine Oil System > PILOT NOTICED RT ENGINE OIL PRESSURE DROP AFTER CLIMBING THRU 24000 FT. HE SHUT THE ENGINE DOWN AS A PRECAUTIONARY MEASURE. THE PILOT LANDED WITHOUT FURTHER PROBLEMS. MAINTENANCE COMPLIED WITH A VISUAL CHECK OF THE ENGINE AND DID A FULL ENGINE RUN UP. THE - [SDR WVBA2002005](https://openairdocs.org/sdr/WVBA2002005.md): Valve · leaking · Mar 4, 2002 · N3527U · Piper PA31350 · Aircraft Fuel Distribution System > DURING SOME LINE MAINTENANCE, THE TECHNICIAN NOTICED FUEL STAIN FROM THE HEATER DRAIN. THE SOURCE WAS FOUND TO BE THE FUEL PRESSURE REGULATOR WHICH WAS LEAKING FROM THE LOWER PARTING SURFACE. THE UNIT WAS REMOVED AND REPLACED. - [SDR WVBA2001033](https://openairdocs.org/sdr/WVBA2001033.md): Pump · leaking · May 17, 2001 · N3527U · Piper PA31350 · Engine Fuel Pump > DURING INSPECTION IT WAS NOTICED THAT FUEL STAIN WAS ON THE BODY OF THE FUEL PUMP NEAR THE DRAIN COMING FROM THE PARTING SURFACE (LOWER) NOTE THIS IS A NEW STYLE PUMP DESIGNED TO RELIEVE THE LEAKING PROBLEM THE OLDER PUMPS HAD IN THIS AREA. THE PUMP WAS REPL - [SDR WVBA2001026](https://openairdocs.org/sdr/WVBA2001026.md): Motor · failed · May 2, 2001 · N3527U · Piper PA31350 · Trailing Edge Flap Actuator > PILOT REPORTED FLAPS STUCK IN DOWN POSITION, IT WAS DISCOVERED THAT THE FLAPS HAD STOPPED PRIOR TO HITTING THE DOWN LIMIT SWITCH AND WAS DETERMINED THAT THE MOTOR HAD BURNED OUT. THE UNIT WAS REMOVED AND REPLACED AND FLAP OPERATION APPEARED NORMAL. - [SDR WVBA2001016](https://openairdocs.org/sdr/WVBA2001016.md): Camshaft · damaged · Feb 28, 2001 · N3527U · Piper PA31350 · Reciprocating Engine Power Section > DURING INSPECTION METAL CONTAMINATION WAS DISCOVERED IN THE OIL FILTER. A CHECK OF VALVELIFT WAS DONE AND IT WAS DISCOVERED THAT NR1 AND NR2 INTAKE LOBES WERE EXCESSIVE. NR1 CYLINDER WAS REMOVED AND DAMAGE OBSERVED ON THE CAM LOBES AND TAPPET FOLLOWERS. NO - [SDR WVBA2001008](https://openairdocs.org/sdr/WVBA2001008.md): Regulator · leaking · Jan 30, 2001 · N3527U · Piper PA31350 · Heating System > DURING ROUTINE INSPECTION REGULATOR WAS FOUND TO BE LEAKING FROM THE PARTING SURFACE. THE UNIT WAS REMOVED AND REPLACED. - [SDR 20010125CW004](https://openairdocs.org/sdr/20010125CW004.md): Valve · leaking · Jan 2, 2001 · N3527U · Piper PA31350 · Heating System > DURING ROUTINE INSPECTION, FUEL WAS OBSERVED LEAKING FROM FUEL SOLENOID SHUT OFF VALVE. PART WAS REMOVED FROM SERVICE. - [SDR 20001016SH024](https://openairdocs.org/sdr/20001016SH024.md): Camshaft · damaged · Oct 3, 2000 · N3527U · Piper PA31350 · Reciprocating Engine Power Section > DURING INSPECTION, LOW CYLINDER COMPRESSION WAS DETECTED DURING THE COMPRESSION CHECK. THE CYLINDER WAS REMOVED AND A VISUAL INSPECTION PEFORMED ON THE CAMSHAFT. DETERMINED BOTH NR 3 AND NR 4 INTAKE LOBES AND TAPPET FACES WERE DAMAGED. SUBMITTER STATED THIS - [SDR 20001016SH023](https://openairdocs.org/sdr/20001016SH023.md): Heater · leaking · Sep 29, 2000 · N3527U · Piper PA31350 · Heating System > DURING ROUTINE INSPECTION, FUEL WAS OBSERVED DRIPPING OUT OF THE DRAIN OF THE FRONT JANITROL HEATER AND FUEL PRESSURE REGULATOR DRAIN. THE REGULATOR WAS REMOVED AND FUEL WAS NOTED LEAKING FROM WHERE THE POWER WIRE ENTERS THE UNIT. - [SDR WVBAO1399](https://openairdocs.org/sdr/WVBAO1399.md): Seal · leaking · Dec 5, 1999 · N3527U · Piper PA31350 · Propeller Blade Section > DURING INSPECTION OF PROPELLER, RED HUB OIL WAS FOUND LEAKING FROM THE BASES OF ALL 3 BLADES. THE INSIDE OF THE SPINNER AND SPINNER BULKHEAD ALSO HAD A NOTICEABLE AMOUNT OF RED OIL ON THEM. THE PROP WAS WASHED DOWN AND THE ENGINE RAN FOR 5 MINUTES AND SHUT DO - [SDR WVBAD1499](https://openairdocs.org/sdr/WVBAD1499.md): Seal · leaking · Dec 5, 1999 · N3527U · Piper PA31350 · Propeller Blade Section > DURING INSPECTION OF PROPELLER, RED HUB OIL WAS FOUND LEAKING FROM THE BASES OF ALL 3 BLADES. THE INSIDE OF THE SPINNER AND SPINNER BULKHEAD ALSO HAD A NOTICEABLE AMOUNT OF RED OIL ON THEM. THE PROP WAS WASHED DOWN AND THE ENGINE RAN FOR 5 MINUTES AND SHUT DO - [SDR 99ZZZX3485](https://openairdocs.org/sdr/99ZZZX3485.md): Regulator · leaking · Aug 2, 1999 · N3527U · Piper PA31350 · Heating System > DURING ROUTINE INSPECTION, REGULATOR WAS FOUND LEAKING AT UPPER GASKET. - [SDR 99ZZZX2568](https://openairdocs.org/sdr/99ZZZX2568.md): Regulator · leaking · Jun 24, 1999 · N3527U · Piper PA31350 · Heating System > PILOT REPORTED A DROP IN RIGHT FUEL PRESSURE WHEN HEATER WAS STARTED. FURTHER INVESTIGATION REVEALED FUEL LEAKAGE FROM HEATER FUEL PRESSURE REGULATOR AT UPPER SEAL. - [SDR 99ZZZX2320](https://openairdocs.org/sdr/99ZZZX2320.md): Camshaft · worn · May 1, 1999 · N3527U · Piper PA31350 · Reciprocating Engine Power Section > AT 100-HOUR INSPECTION, DISCOVERED FERROUS METAL CONTAMINATION IN FILTER ELEMENT. PERFORMED VALVE CLEARANCE CHECK AND FOUND NR 5, NR 6 INTAKE LOBBS WITH EXCESSIVE CLELARANCE BASED ON A SIMILAR CIRCUMSTANCE. IT WAS DECIDED TO REMOVE THE ENGINE FROM SERVICE FO - [SDR WVBA00799](https://openairdocs.org/sdr/WVBA00799.md): Regulator · leaking · Apr 1, 1999 · N3527U · Piper PA31350 · Reciprocating Engine Oil System > OIL WAS OBSERVED ON SIDE OF COWLING ON POST-FLIGHT AND IN THE BOTTOM OF COWL. ALSO, AFTER REMOVING COWL, OIL WAS OBSERVED COMING FROM AROUND THE THREADS OF OIL PRESSURE REGULATOR. REGULATOR WAS REPLACED. (X) - [SDR 99ZZZX1210](https://openairdocs.org/sdr/99ZZZX1210.md): Fitting · broken · Mar 4, 1999 · N3527U · Piper PA31350 · Landing Gear Door Actuator > ON TAKEOFF, PILOT SELECTED GEAR UP. RED UNSAFE LIGHT REMAINED ILLUMINATED. PILOT RETURNED TO BASE, PUMPED GEAR DOWN BY HAND. LANDED WITHOUT INCIDENT. RIGHT MAIN INNER GEAR DOOR ACTUATOR UP-LINE FITTING WAS SNAPPED IN HALF. DURING GEAR INSPECTION, OBSERVAT - [SDR 99ZZZX1398](https://openairdocs.org/sdr/99ZZZX1398.md): Flange · broken · Feb 28, 1999 · N3527U · Piper PA31350 · Magneto/Distributor > THE FLANGE SECTION OF THE HOUSING DESIGNED TO BE SECURED BY THE BOTTOM CLAMP, BROKE OFF DURING FLIGHT. MAGNETO CONTINUED TO FUNCTION NORMALLY, BUT PILOT REPORTED AN OIL LEAK IN THE RIGHT ENGINE, OBSERVED DURING WALK-AROUND AFTER LANDING. HOUSING SHOULD HAUL A - [SDR 98ZZZX4766](https://openairdocs.org/sdr/98ZZZX4766.md): Switch · failed · Nov 25, 1998 · N3527U · Piper PA31350 · Auto Flight System > WILL NOT TEST UP OR DOWN. AUTOPILOT WILL NOT ENGAGE. - [SDR 98ZZZX4764](https://openairdocs.org/sdr/98ZZZX4764.md): Switch · failed · Nov 25, 1998 · N3527U · Piper PA31350 · Auto Flight System > SWITCH INTERMITTENT, WILL TEST SUCCESSFULLY. REMOVED UNIT AND BENCH TESTED. DUPLICATED MALFUNCTION ON BENCH, BUT ONLY AFTER SUBJECTING UNIT TO A TEMPERATURE OF MINUS 12 DEGREES FAHRENHEIT FOR 3.75 HOURS. - [SDR 98ZZZX1052](https://openairdocs.org/sdr/98ZZZX1052.md): Switch · intermittent · Jan 22, 1998 · N3527U · Piper PA31350 · Autopilot System > ACCELERATOR SWITCH TESTS INERMITTENTLY IN AUTOPILOT SYSTEM ESPECIALLY IN COLD WEATHER. - [SDR 98ZZZX227](https://openairdocs.org/sdr/98ZZZX227.md): Valves · pitted · Dec 3, 1997 · N3527U · Reciprocating Engine Cylinder Section > INSPECTION OF 6 NEW VALVES FOUND TWO OF THE VALVE STEMS WERE GENERALLY IN POOR CONDITION. FURTHER INSPECTION FOUND DEEP PITS AND SCRATCHES THAT APPEARED TO BE INCLUSIONS OR OTHER IMPURITIES. - [SDR 98ZZZX228](https://openairdocs.org/sdr/98ZZZX228.md): Dist Block · worn · Nov 18, 1997 · N3527U · Piper PA31350 · Magneto/Distributor > INSPECTION OF MAGNETO DISTRIBUTOR BLOCK FOUND BUSHING WEAR AND WEAR DAMAGE TO LARGE DISTRIBUTOR GEAR. - [SDR 97ZZZX2875](https://openairdocs.org/sdr/97ZZZX2875.md): Spar · cracked · Jun 6, 1997 · N3527U · Piper PA31350 · Elevator, Spar/Rib > AIRCRAFT ELEVATORS WERE OPENED UP IN C/W PIPER MANDATORY SB 998. THE LEFT ELEVATOR SPAR WAS FOUND CRACKED AT THE TIP AND FOUND CRACKED HALF WAY THROUGH THE SPAR JUST INBOARD OF THE VERY OUTBOARD ATTACH POINT. ELEVATOR SPARS NEED TO BE STRENGTHENED UP AT THES ## 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 n_number = 'N3527U' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N3527U/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.