# Service difficulty reports: Pratt & Whitney R-985-AN-1

A list on [Pratt & Whitney R-985-AN-1](https://openairdocs.org/engine/pratt-whitney-r-985-an-1.md).

Newest first. General aviation reporting is voluntary.

- [SDR CA151030020](https://openairdocs.org/sdr/CA151030020.md): Cylinder · failed · Oct 1, 2015 · Dhav DHC2MKI · Reciprocating Engine Cylinder Section
  > (CAN) DURING INSPECTION FOUND FOUR FAILED STUDS ON NR 3 CYLINDER ASSEMBLY. ALSO CRACK WAS SEEN ON FRONT CRANK CASE ADJACENT TO THE CYLINDER.
- [SDR CA150527006](https://openairdocs.org/sdr/CA150527006.md): Control Cable · frayed · May 22, 2015 · Wthrly 620B · Rudder Control System
  > (CAN) DURING ITS ANNUAL INSPECTION, THE LT RUDDER CABLE ASSEMBLY WAS FOUND WORN & FRAYED ON THE AFT PULLEY. THE RT RUDDER CABLE WAS FOUND TO BE WORN OUT & FRAYED AS WELL. CABLES REMOVED & TO BE REPLACED WITH NEW UNITS. BOTH LT & RT RUDDER CABLE ASSEMBLIES A
- [SDR CA141015006](https://openairdocs.org/sdr/CA141015006.md): Rib · cracked · Oct 15, 2014 · Wthrly 620B · Wing, Rib/Bulkhead
  > (CAN) ANNUAL INSPECTION REVEALED CRACKS IN THE MAJORITY OF BOTH THE LH AND RH WING LEADING EDGE NOSE RIBS, CRACKS EMANATE FROM THE AFT PORTION OF THE UPPER AND LOWER FLANGES OF THE RIBS.
- [SDR CA141015007](https://openairdocs.org/sdr/CA141015007.md): Attach Angle · loose · Oct 15, 2014 · Wthrly 620B · Elevator Tab, Attach Fittings
  > (CAN) WHILE CARRYING OUT AN ANNUAL INSPECTION, ALL RIVETS THOUGH THE HORIZONTAL STABILIZER ATTACH ANGLES (LONGERONS) AND DIRECTLY ADJACENT TO ALL FOUR STABILIZER ATTACH BLOCKS, WERE FOUND TO BE LOOSE AND SMOKING.
- [SDR CA120917015](https://openairdocs.org/sdr/CA120917015.md): Cylinder · separated · Jul 29, 2012 · Dhav DHC2MKI · Reciprocating Engine Cylinder Section
  > (CAN) WHILE IN CRUISE PILOT NOTICED VIBRATION. PRECAUTIONARY LANDING CARRIED OUT. ENGINE EXAMINED AND FOUND NR 1 CYLINDER HAD SEPARATED FROM CASE. BROKEN STUDS REPLACED WITH NEW STUDS AND ENGINE RETURNED TO SERVICE.
- [SDR CA100730007](https://openairdocs.org/sdr/CA100730007.md): Blade · separated · Jul 30, 2010 · Wthrly 620B · Propeller Blade Section
  > PROPELLER RECEIVED FROM CUSTOMER WITH APPROX 5" OF BLADE MISSING FROM NR2 BLADE TIP (S/N H89522). PROPELLER DISMANTLED, CLEANED, CLAMPS AND HUB SPIDER MPI INSPECTED, BLADES LPI INSPECTED (IAW MFG), ALL BEARINGS REPLACED DUE TO CORROSION AND DENTING, BLADE REP
- [SDR 2010FA0000208](https://openairdocs.org/sdr/2010FA0000208.md): Rib · cracked · Feb 8, 2010 · N9024F · Wthrly 620B · Wing, Rib/Bulkhead
  > MOST L/E RIBS CRACKED AT UPPER AND LOWER AFT CORNERS WHERE ATTACHED TO FWD HINGED HALF. 50 PERCENT TO LT WING RIBS WERE CRACKED AS WERE 90 PERCENT OF RT WING RIBS. THESE RIBS REQUIRED REPAIR AND REINFORCEMENT. OTHER ACFT MAY REQUIRE SIMILAR ACTION.
- [SDR CA090622004](https://openairdocs.org/sdr/CA090622004.md): Tube Frame · cracked · Jun 8, 2009 · Dhav DHC2MKI · Fuselage Main, Frame
  > (CAN) SYR INSP REQUREMENT - FOUND LARGE CRACK IN BIRD CAGE TUBULAR STRUCTURE.
- [SDR CA080611005](https://openairdocs.org/sdr/CA080611005.md): Attach Bracket · worn · Jun 9, 2008 · Dhav DHC2MKI · Horizontal Stabilizer, Attach Fittings
  > (CAN) DURING ANNUAL INSP WITH AN AOG AIR SUPPORT WING ANGLE INSTALLED MODIFICATION, MOVEMENT WAS FOUND IN THE HORIZONTAL STABILIZER FWD ATTACH POINTS. THE HORIZONTAL STABILIZER FWD ATTACH BRACKETS WERE REMOVED AND INSPECTED AND IT APPEARS THAT THE FUSELAGE FIT
- [SDR CA080122008](https://openairdocs.org/sdr/CA080122008.md): Line · obstructed · Jan 18, 2008 · Dhav DHC2MKI · Reciprocating Engine Oil System
  > (CAN) WHEN ENG WAS REMOVED FOR O/H, IT WAS DISCOVERED THAT IN THE OIL DELIVERY LINE THERE WAS PLASTIC DEBRIS FROM THE CONTAINERS USED TO REPLENISH THE ENGINE OIL. THERE WAS POOR MAINTENANCE PRACTICE WHEN OPENING THESE CONTAINERS TO POUR THE OIL IN THE TANK IN
- [SDR CA040702002](https://openairdocs.org/sdr/CA040702002.md): Bellows · failed · Jun 27, 2004 · Dhav DHC2* · Fuel Control/Reciprocating Engines
  > (CAN) HAVE DETERMINED THAT CARB HEAT BELLOWS P/N C2E2215 AS RECEIVED WAS ACQUIRED DIRECTLY WITHOUT GOING THROUGH QA INSPECTION AND CERTIFICATION. PART BEARS DHC-2 PN STAMP AND APPEARS GENUINE. PART PLACED IN QUARATINE.
- [SDR CA040427011](https://openairdocs.org/sdr/CA040427011.md): Switch · out of adjust · Jan 12, 2004 · Beech D17S · Landing Gear Position and Warning
  > (CAN) LT MAIN LDG GEAR (DOWN) SWITCH OUT OF ADJUSTMENT CAUSING (NOT LOCKED DOWN) INDICATION. SWITCH READJUSTED, GEAR SWINGS COMPLETED WITH ALL OPERATIONS AND INDICATIONS NORMAL.
- [SDR CA030323001](https://openairdocs.org/sdr/CA030323001.md): Flapper Valve · broken · Mar 23, 2003 · Dhav DHC2MK1 · Aircraft Fuel Distribution System
  > (CAN) BOTH CHECK VALVES WERE REMOVED FROM AIRCRAFT AND DISASSEMBLED.THE CHECK VALVE THAT WAS LOCATED AT THE HAND WOBBLE PUMP IN THE AIRCRAFT WAS FOUND TO HAVE A BROKEN SPRING ON THE INTERNAL FLAPPER VALVE. WHEN EXTERIOR WAS CLEANED, CRACKS WERE FOUND IN THE MA
- [SDR CA021122004](https://openairdocs.org/sdr/CA021122004.md): Tube · cracked · Oct 30, 2002 · Beech D17S · Main Landing Gear Attach Section
  > (CAN) STRUCTURAL TUBE, 10CM IN LENGTH, FORMING UPPER SUPPORT FOR RT LANDING GEAR SLIDE TUBE FOUND CRACKED DURING PERFORMANCE OF UNRELATED MAINTENANCE. CRACK ORIGINATED FROM HOLE IN TUBE USED TO APPLY LINSE ED OIL TO INTERIOR OF TUBE. HOLE HAD BEEN PLUGGED WITH
- [SDR TYW2002F00000](https://openairdocs.org/sdr/TYW2002F00000.md): Blade · failed · Feb 7, 2002 · N90275 · Wthrly 620B · Propeller Blade Section
  > 11 INCHES SEPRATED FROM ONE PROPELLER BLADE DURING FLIGHT. AIRCRAFT WAS SPRAYING A CROP AND WAS IN A TURN WHEN BLADE TIP SEPARATED.
- [SDR AUS20011460](https://openairdocs.org/sdr/AUS20011460.md): Propeller · faulty · Dec 2, 2001 · Scwzer G164A · Propeller Assembly
  > (AUS) THE FOLLOWING DEFECTS WERE FOUND ON THE PROPELLER WHEN RECEIVED FOR OVERHAUL:-1. ZERO BEARING TENSION ON BOTH BLADES2. REAR BARREL HALF HAS BEEN DRILLED, TAPPED AND GREASE NIPPLES FITTED. NO CERTIFICATION COULD BE FOUND TO SUBSTANTIATE THIS MODIFICATION
- [SDR CA011029015](https://openairdocs.org/sdr/CA011029015.md): Cylinder Head · cracked · Oct 3, 2001 · Dhav DHC2MK1 · Reciprocating Engine Cylinder Section
  > (CAN) CYLINDER HEAD CRACKED.
- [SDR 2001FA0000255](https://openairdocs.org/sdr/2001FA0000255.md): Valve Spring · broken · Jul 25, 2001 · N2035N · Wthrly 620B · Reciprocating Engine Cylinder Section
  > ENGINE BEGAN BACKFIRING AND POWER DECREASED, AIRCRAFT LANDED AS A RESULT OF RUNNING THROUGH A FENCE. FOUND NR 1 CYLINDER INTAKE VALVE SPRINGS BROKEN. REPLACED SPRINGS, OPERATION NORMAL. APPEARED TO BE SMALL RUST PITS IN BREAK AREAS.
- [SDR CA010713011](https://openairdocs.org/sdr/CA010713011.md): Battery · wrong part · Jul 4, 2001 · Dhav DHC2MK1 · Emergency Locator Beacon
  > (CAN) DURING BATTERY DUE DATE INSPECTION IT WAS FOUND THAT THE ELT HAD INCORRECT BATTERIES INSTALLED. INSTALLED CORRECT BATTERIES.
- [SDR AUS20011146](https://openairdocs.org/sdr/AUS20011146.md): Hose · failed · Jun 9, 2001 · Dhav DHC2* · Landing Gear Retraction/Extension System
  > (AUS) RT LANDING GEAR HYDRAULIC HOSE CHAFED INSIDE FLOAT STRUT. HOSE BURST. LOSS OF HYDRAULIC FLUID. AIRCRAFT IS A FLOATPLANE.
- [SDR CA001122006](https://openairdocs.org/sdr/CA001122006.md): Bushing · worn · Nov 1, 2000 · Dhav DHC2* · Wing Miscellaneous Structure
  > (CAN) DURING ROUTINE INSPECTION THE RT TOP LIFT STRUT BUSHING WAS FOUND TO BE WORN. THIS CONDITION APPEARS TO BE A WEAK PART IN DESIGN AS WE ARE CONSTANTLY REPAIRING THE TOP END OF THE LIFT STRUTS.: THE ALUMINIUM LIFT STRUT ENDS ARE FIELD REPAIRABLE.
- [SDR 20000925SH021](https://openairdocs.org/sdr/20000925SH021.md): Screw · loose · Sep 25, 2000 · N90303 · Wthrly 620B · Fuel Control/Reciprocating Engines
  > CARBURETOR FLOAT FULCRUM SCREW WAS FOUND LOOSE ON ANNUAL INSPECTION. BRASS THREADS WERE FOUND WORN. REPLACED FULCRUM SCREW, PROPERLY INSTALLED NEW SCREW AND SAFTIED. BELIEVE SCREW WAS NOT PROPERLY INSTALLED BY MANUFACTURER. SUBMITTER RECOMMENDED AN AD OR S
- [SDR CA000404046](https://openairdocs.org/sdr/CA000404046.md): Frame · broken · Mar 27, 2000 · Dhav DHC2MK1 · Fuselage Main, Frame
  > (CAN) CLUSTER FOUND BROKEN CLEAR OF ATTACHING BOLT DURING ANNUAL INSPECTION. FRAME SENT OUT FOR REBUILD IN A JIG.
- [SDR CA000404001](https://openairdocs.org/sdr/CA000404001.md): Shaft · broken · Mar 21, 2000 · Dhav DHC2MK1 · Engine Fuel Pump
  > (CAN) ENGINE WOULD NOT RUN WITHOUT WOBBLE PUMP OPERATING. ENGINE DRIVEN PUMP REMOVED AND QUILL SHAFT FOUND BROKEN.
- [SDR 20000925SH023](https://openairdocs.org/sdr/20000925SH023.md): Screw · loose · Sep 1, 1999 · N9025D · Wthrly 620B · Fuel Control/Reciprocating Engines
  > CARBURETOR FLOAT FULCRUM SCREW VIBRATED LOOSE CAUSING FLOAT TO STICK. AIRCRAFT ENGINE BEGAN RUNNING ROUGH. AIRCRAFT SUCCESSFULLY RETURNED TO FIELD. FULCRUM SCREW BRASS THREADS WERE FOUND WORN CAUSING SCREW3 TO COME LOOSE. AIRCRAFT WAS NEW ON 12-6-96 AND NO
- [SDR 20000925SH022](https://openairdocs.org/sdr/20000925SH022.md): Screw · loose · Aug 8, 1999 · N197SK · Wthrly 620B · Fuel Control/Reciprocating Engines
  > CARBURETOR FLOAT FULCRUM SCREW SAFETY WIRE VIBRATED THROUGH BACKING OUT FULCRUM SCREW FOR FLOAT. ENGINE QUIT RUNNING CAUSING FORCED LANDING. AIRCRAFT SUSTAINED SUBSTANTIAL DAMAGE. FULCRUM SHOWED CHATTER MARKS INDICATING FULCRUM SCREW WAS NOT PROPERLY SEATED
- [SDR CA990209009](https://openairdocs.org/sdr/CA990209009.md): Bulkhead · cracked · Jan 28, 1999 · Dhav DHC2MK1 · Fuselage Main, Bulkhead
  > (CAN) INSPECTION PER CR-98-38 FOUND THE BULKHEAD AND CHANNEL ASSEMBLY CRACKED.
- [SDR AU961165](https://openairdocs.org/sdr/AU961165.md): Pin · mismanufactured · Jul 30, 1996 · Wthrly 620 · Wing Miscellaneous Structure
  > (AUS) WING HINGE PINS FAULTY - DEPTH OF THREADED HOLES VARIES BETWEEN 21.463MM AND 21.844MM (0.845IN AND 0.860IN) - MAXIMUM DEPTH OF HOLE IS 21.336MM (0.840IN) - FOUND DURING INSPECTION IAW WEATHERLY SERVICE NOTE NO15
- [SDR 96ZZZX3813](https://openairdocs.org/sdr/96ZZZX3813.md): Cylinder · head leakage · Jun 10, 1996 · N5296 · Scwzer G164A · Reciprocating Engine Cylinder Section
  > OVER LAST 200 HOURS, CYLINDER HEAD SEPARATED ON 3 CYLINDERS IN FLIGHT OR ON TAKEOFF. THE 4TH CYLINDER HAD STAINS AND LEAKAGE AND REMOVED BEFORE FAILURES, BUT WAS NOT BETWEEN NR 2 AND NR 3 FIN PER AD 78-08-07. IT WAS LEAKING BETWEEN TOP STEEL FIN AND NR 1 ALU
- [SDR 95ZZZX2636](https://openairdocs.org/sdr/95ZZZX2636.md): Pump · defective · Apr 27, 1995 · N62469 · Dhav DHC2MK1 · Engine Fuel Pump
  > PILOT REPORTED EXCESSIVE FUEL CONSUMPTION. DETERMINED FUEL PUMP (ENGINE DRIVEN) TO BE DEFECTIVE. REPLACED FUEL PUMP WITH ZERO TSO UNIT. OPS CHECK SATISFACTORY.

## 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 engine_model_key = 'R985AN1'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/pratt-whitney-r-985-an-1/reports

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