# Service difficulty reports: N537AL, cancelled Dec 16, 2011

A list on [N537AL, cancelled Dec 16, 2011](https://openairdocs.org/deregistered/N537AL-2011-12-16.md).

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first.

- [SDR ALGA4417591710](https://openairdocs.org/sdr/ALGA4417591710.md): Flange · cracked · Sep 17, 2010 · N537AL · Bell 407 · Turbine Engine Compressor Section
  > FOUND CRACKING OF FWD FLANGE BEYOND REPAIRABLE LIMITS.
- [SDR ALG2005F00113](https://openairdocs.org/sdr/ALG2005F00113.md): Window · separated · Nov 15, 2005 · N537AL · Bell 407 · Passenger Compartment Windows
  > ON APPROACH TO LANDING, RT PASSENGER SLIDING WINDOW SEPARATED FROM THE AIRCRAFT. SECOND OCCURRENCE WITH SAME AC WITHIN A WEEK. REPLACED DOOR WITH SERVICEABLE DOOR AND WINDOW. (K)
- [SDR ALG2005F00061](https://openairdocs.org/sdr/ALG2005F00061.md): Spring · failed · Aug 25, 2005 · N537AL · Bell 407 · Main Rotor Head
  > AIRCRAFT DEVELOPED A VERTICAL VIBRATION IN FLIGHT. NOTIFIED MAINTENANCE. FRAHM DAMPER SPRING HAD FAILED. REMOVED AND INSTALLED FOUR NEW FRAHM DAMPER SPRINGS IAW MM. (K)
- [SDR ALG2004F00064](https://openairdocs.org/sdr/ALG2004F00064.md): Shoulder Belt · odor · Sep 8, 2004 · N537AL · Bell 407 · Emergency Equipment
  > AFTER DEPARTING LFT WITH MMS DIRECT TO SM58 PASSENGER IN BACK RT SEAT FORWARD FACING COMPLAINED OF (STRONG FUEL ODOR) TO THE POINT OF ASKING FOR AIR SICK BAG. DIVERTED AIRCRAFT FOR MAINTENANCE. MAINTENANCE INSPECTED ENGINE COMPARTMENT AT 100 PERCENT, NO LEAK
- [SDR 2004F00375](https://openairdocs.org/sdr/2004F00375.md): Odor · detected · Jun 22, 2004 · N537AL · Bell 407 · Air Distribution System
  > IN FLIGHT, DURING FLIGHT OUT TO EI 296 A PAX COMPLAINED OF FUEL ODOR IN THE CABIN. INSPECTED ENGINE AT 100 PERCENT NR, FLEW AIRCRAFT NOTED NO PRESENCE OF FUEL ODOR. INSPECTED PAX CABIN AREA, NO FUEL LEAKS AT BACK WALL, FLOOR AREA, OR UNDER AFT FACING SEATS.
- [SDR ALG2004F00020](https://openairdocs.org/sdr/ALG2004F00020.md): Hmu · unserviceable · Apr 20, 2004 · N537AL · Bell 407 · Fuel Controlling System
  > FUEL FUMES WERE NOTED IN THE AFT RT PORTION OF THE PASSENGER COMPARTMENT. NOTED TO BE STRONG, SO DIVERTED TO HAVE IT CHECKED. MAINTENANCE REMOVED HAD BIN AND FUEL VALVE ACCESS PANEL. WITH BATTERY POWER ON, BOOST PUMPS RUNNING AND FUEL VALVE OPEN NOTED HEAVY
- [SDR ALGA094182](https://openairdocs.org/sdr/ALGA094182.md): Gear · spalled · Apr 15, 2004 · N537AL · Bell 407 · Main Rotor Gearbox
  > GEAR HAS HEAVY SPALLING. REMOVED AND REPLACED W/SERVICEABLE PART.
- [SDR ALGA094181](https://openairdocs.org/sdr/ALGA094181.md): Gear · spalled · Apr 15, 2004 · N537AL · Bell 407 · Main Rotor Gearbox
  > GEAR HAS HEAVY SPALLING. REMOVED AND REPLACED W/SERVICEABLE PART.
- [SDR ALG2003F00091](https://openairdocs.org/sdr/ALG2003F00091.md): Indicator · malfunctioned · Aug 23, 2003 · N537AL · Bell 407 · Engine Temperature Indicating System
  > IN CRUISE FLIGHT, EXCEDENCE ON MGT WITH CHECK INSTRUMENT LIGHT DURING CRUISE WITH INSTRUMENT INDICATOR IN THE GREEN (704 TO 714). THE MECHANIC CHECKED COMPUTER FOR EXCEDENCE, HAD NO EXCEDENCE OR FAULTS RECORDED, REPLACED INDICATOR MGT.
- [SDR ALG2002F00061](https://openairdocs.org/sdr/ALG2002F00061.md): Cap · corroded · Jul 2, 2002 · N537AL · Bell 407 · Main Rotor Mast/Swashplate
  > DURING DISASSEMBLY FOR 2500 HOUR OVERHAUL. EXCESSIVE CORROSION ON LOWER FLANGE MATING SURFACE OF SWASHPLATE.
- [SDR ALG2002F00032](https://openairdocs.org/sdr/ALG2002F00032.md): Gear · damaged · Mar 25, 2002 · N537AL · Bell 407 · Main Rotor Gearbox
  > UPON INSPECTION OF PARTS, FOUND ROUGH GEAR TEETH EDGES AT RADIUS, CAUSING DMAGE TO MATING GEAR TEETH. THIS IS DUE TO IMPROPER MACHING AT RADIUS.
- [SDR ALG2002F00031](https://openairdocs.org/sdr/ALG2002F00031.md): Pinion Gear · spalled · Mar 24, 2002 · N537AL · Bell 407 · Main Rotor Gearbox
  > UPON INSPECTION OF PART. SPALLING AND GALLING GEAR TEETH DUE TO ROUGH EDGES ON T/M GEAR TEETH. (PN 6893673 SN NN144757) TT 1878.2.
- [SDR ALG2002F00055](https://openairdocs.org/sdr/ALG2002F00055.md): Bellcrank · damaged · Mar 16, 2002 · N537AL · Bell 407 · Tail Rotor Control System
  > DURING SERVICE CHECK, NAS BOLT BORE ELONGATED ON SINGLE EAR OF BELLCRANK. MODIFY WITH STEEL TOP-HAT BUSHING.
- [SDR 2001F00606](https://openairdocs.org/sdr/2001F00606.md): Disc Pack · cracked · Aug 22, 2001 · N537AL · Bell 407 · Tail Rotor Drive Shaft
  > DAILY INSPECTION, COUPLING IS CRACKED, PROBABLE CAUSE IS EXCESSIVE RIGIDITY IN THE BEARING MOUNT SYSTEM. ALLOW TAILROTOR DRIVESHAFT TO FLOAT SO DISC PACKS DO NOT FLEX AS MUCH OR AS OFTEN. (M)
- [SDR 20001025SH017](https://openairdocs.org/sdr/20001025SH017.md): Pinion Gear · failed · Jul 27, 2000 · N537AL · Bell 407 · Main Rotor Gearbox
  > DISASSEMBLED GEARBOX DUE TO METAL IN OIL. CLEANED AND INSPECTED, FOUND EXCESSIVE GALLING ON PINION GEAR AND T/M GEAR TEETH. PINION GEAR HAD EXCESSIVE GALLING ON GEAR TEETH DUE TO IMPROPER MESHING OF T/R AND PINION GEAR. SECONDARY DAMAGE: T/M GEAR P/N 68936
- [SDR 99ZZZX4600](https://openairdocs.org/sdr/99ZZZX4600.md): Disc Pack · cracked · Sep 30, 1999 · N537AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING 25-HOUR AD INSPECTION, NR 3 DISC PACK CRACKED AT FORWARD DISC. IT IS CRACKED IN ONLY ONE LOCATION.
- [SDR 99ZZZX414](https://openairdocs.org/sdr/99ZZZX414.md): Bolt · stretched · Dec 23, 1998 · N537AL · Bell 407 · Compressor Bleed Valve
  > UPON DISASSEMBLY OF ENGINE FOR METAL, CHECKED BOLT TIGHTNESS BY MOVING COVER AND BODY ASSY. ACTUAL TORQUE ON BOLTS WAS ONLY 15 INCHES/POUNDS. THREE EACH BLEED VALVE COVER BOLTS WERE NOT TORQUED TO SPECS FROM FACTORY OR BOLTS ARE STRETCHING AFTER ASSEMBLY AND
- [SDR 99ZZZX416](https://openairdocs.org/sdr/99ZZZX416.md): Line · clogged · Dec 22, 1998 · N537AL · Bell 407 · Turbine Engine Reduction Gear
  > UPON DISASSEMBLY OF GEARBOX, FOUND EXCESSIVE AMOUNTS OF SPLIT LINE SEALANT ON SPLIT LINE. NOTE: BEFORE DISASSEMBLY, FOUND ALOT OF SEALANT ALONG SPLIT LINE, OUTSIDE OF GEARBOX. UPON INSPECTION OF GEARBOX PARTS, FOUND SCAVENGE OIL TRANSFER TUBE NR 23004230 BL
- [SDR 99ZZZX408](https://openairdocs.org/sdr/99ZZZX408.md): Bearing · galled · Dec 22, 1998 · N537AL · Bell 407 · Turbine Engine Reduction Gear
  > UPON INSPECTION OF BEARING (AFT) PTO GEAR FOUND WITH EXCESSIVE GALLING ON ONE BALL BEARING. SUBMITTER STATED POSSIBLE CAUSE FOR BEARING GALLING UNKNOWN.
- [SDR 99ZZZX415](https://openairdocs.org/sdr/99ZZZX415.md): Gear · galled · Dec 18, 1998 · N537AL · Bell 407 · Turbine Engine Reduction Gear
  > ENGINE WAS REMOVED FOR METAL CHIPS ON UPPER AND LOWER CHIP PLUGS. UPON INSPECTION OF GEARBOX PARTS, FOUND PINION GEAR GALLING AND TORQUE METER GEAR SPALLING. NOTE: METAL CONTAMINATION CAUSED DAMAGE TO OTHER PARTS IN GEARBOX. SUBMITTER SUGGESTED IMPROPER ME
- [SDR 99ZZZX411](https://openairdocs.org/sdr/99ZZZX411.md): Journal · making metal · Dec 11, 1998 · N537AL · Bell 407 · Turbine Engine Reduction Gear
  > UPON DISASSEMBLY OF GEARBOX, TORQUE METER SUPPORT JOURNAL WAS FOUND TO HAVE MAGNESIUM SLIVERS IN JOURNAL BORE. UPON FINDING MAGNESIUM SLIVERS IN TORQUE METER JOURNAL BORE, MEASURED JOURNAL AND FOUND IT TO BE OVER MFG SPECS 2.485 INCHES (MFG MAX LIMIT 2.480 IN
- [SDR 99ZZZX42](https://openairdocs.org/sdr/99ZZZX42.md): Support · cracked · Nov 26, 1998 · N537AL · Bell 407 · Horizontal Stabilizer Structure
  > DURING DAILY INSPECTION, FOUND SLAT SUPPORT P/N 206-023-119-110 (LT SIDE, 2ND FROM INBD) CRACKED. REMOVED AND REPLACED CRACKED SUPPORT.
- [SDR 98ZZZX3514](https://openairdocs.org/sdr/98ZZZX3514.md): Bolt · loose · Aug 6, 1998 · N537AL · Bell 407 · Vertical Stabilizer
  > ON PHASE INSPECTION FOUND 3 OF THE 4 VERTICAL FIN MOUNTING BOLTS LOST TORQUE.
- [SDR 98ZZZX3513](https://openairdocs.org/sdr/98ZZZX3513.md): Bolt · loose · Aug 6, 1998 · N537AL · Bell 407 · Vertical Stabilizer
  > ON PHASE INSPECTION FOUND 3 OF THE 4 VERTICAL FIN MOUNTING BOLTS LOST TORQUE.

## 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 = 'N537AL' AND deregistration_id = 'N537AL-2011-12-16'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/deregistered/N537AL-2011-12-16/reports

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