# Service difficulty reports: N427AL, cancelled Jun 20, 2002

A list on [N427AL, cancelled Jun 20, 2002](https://openairdocs.org/deregistered/N427AL-2002-06-20.md).

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

- [SDR ALG2002F00028](https://openairdocs.org/sdr/ALG2002F00028.md): Cowling · corroded · Mar 24, 2002 · N427AL · Bell 407 · Engine Air Intake System
  > REBUILD. EXCESSIVE CORROSION, CRACKING AND WEAR ON COWLING AND INTAKE SHELF.
- [SDR ALG2001F00029](https://openairdocs.org/sdr/ALG2001F00029.md): Pitch Horn · corroded · Oct 19, 2001 · N427AL · Bell 407 · Tail Rotor Head
  > DURING 2500 HOUR OVERHAUL, CORROSION BEYOND LIMITS ON ENTIRE SURFACE OF PARTS DUE TO POOR QUALITY OF MATERIAL AND PAINTING PROCEDURE. SCRAPPED PARTS. USE BETTER QUALITY ALUMINUM AND PAINTING PROCEDURE.
- [SDR ALG2001F00043](https://openairdocs.org/sdr/ALG2001F00043.md): Link · corroded · Oct 9, 2001 · N427AL · Bell 407 · Main Rotor Control
  > DURING PHASE INSPECTION. CORROSION BEYOND MAXIMUM LIMITS. RETURN TO 206 SERIES ALLOY USED ON LINKS AND LEVERS. BETTER ALLOY AND/OR SURFACE PROTECTION.
- [SDR ALG2001F00044](https://openairdocs.org/sdr/ALG2001F00044.md): Disc Pack · cracked · Oct 3, 2001 · N427AL · Bell 407 · Tail Rotor Drive Shaft
  > DAILY INSPECTION OF TAILROTOR HANGER BEARINGS. CRACKED DISC NR5 AND NR6 TAILROTOR HANGER BEARINGS. ALLOW THE TAILROTOR DRIVESHAFT TO FLOAT SO DISC PACKS DO NOT FLEX AS MUCH OR AS OFTEN.
- [SDR 20001206SH006](https://openairdocs.org/sdr/20001206SH006.md): Duct · cracked · Oct 25, 2000 · N427AL · Bell 407 · Engine Oil Cooler
  > DURING DAILY INSPECTION, FOUND OIL COOLER BLOWER CRACKED. (X)
- [SDR 20001113SH011](https://openairdocs.org/sdr/20001113SH011.md): Housing · cracked · Aug 30, 2000 · N427AL · Bell 407 · Engine Oil Distribution (Airframe Furnished)
  > DURING DAILY INSPECTION, FOUND HOUSING CRACKED AND RIVETS MISSING DUE TO HIGH VIBRATION, HOUSING SCRAPPED. (X)
- [SDR 20000912SH005](https://openairdocs.org/sdr/20000912SH005.md): Fuel Cap · leaking · Jul 21, 2000 · N427AL · Bell 407 · Fuel Storage
  > DURING DAILY INSPECTION, FOUND FUEL CAP LEAKING, CRACKED AT LOCKING MECHANISM. (X)
- [SDR 20000804SH013](https://openairdocs.org/sdr/20000804SH013.md): Pitch Horn · corroded · Jul 19, 2000 · N427AL · Bell 407 · Tail Rotor Head
  > DURING FIRST 2,500 HOUR OVERHAUL, FOUND CORROSION BEYOND LIMITS UNDER PLATE, POSSIBLY CAUSED BY INCOMPATIBLE ADHESTIVE PRIMER. (X)
- [SDR 20000804SH015](https://openairdocs.org/sdr/20000804SH015.md): Frame · cracked · Jul 3, 2000 · N427AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING DAILY SERVICE CHECK, FOUND TRANSMISSION SIDE OF MDS, FORWARD FLEX FRAME CRACKED FROM ATTACHMENT BOLT TO OUTER EDGE OF FLEX FRAME. (X)
- [SDR 20000804SH014](https://openairdocs.org/sdr/20000804SH014.md): Disc Pack · cracked · Jun 30, 2000 · N427AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING 25-HOUR AD INSPECTION, FOUND DISC PACK CRACKED IN 3 PLACES FACING AFT AND 1 CRACK FORWARD. (X)
- [SDR 99ZZZX4594](https://openairdocs.org/sdr/99ZZZX4594.md): Housing · cracked · Nov 7, 1999 · N427AL · Bell 407 · Rotorcraft Cooling Fan System
  > DURING DAILY INSPECTION, FOUND CRACKED BLOWER HOUSING.
- [SDR 99ZZZX4596](https://openairdocs.org/sdr/99ZZZX4596.md): Housing · cracked · Nov 3, 1999 · N427AL · Bell 407 · Rotorcraft Cooling Fan System
  > DURING DAILY INSPECTION, FOUND CRACKED BLOWER HOUSING.
- [SDR 99ZZZX4589](https://openairdocs.org/sdr/99ZZZX4589.md): Housing · cracked · Oct 21, 1999 · N427AL · Bell 407 · Rotorcraft Cooling Fan System
  > DURING DAILY INSPECTION, FOUND CRACKED BLOWER HOUSING.
- [SDR 99ZZZX4593](https://openairdocs.org/sdr/99ZZZX4593.md): Housing · cracked · Sep 29, 1999 · N427AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING DAILY INSPECTION, FOUND CRACKED BLOWER HOUSING.
- [SDR 99ZZZX3523](https://openairdocs.org/sdr/99ZZZX3523.md): Bearing · rough · Aug 5, 1999 · N427AL · Bell 407 · Tail Rotor Drive Shaft
  > UNIT WAS REMOVED FOR VIBRATIONS. FOUND 2 EACH 407-340-339-103 BEARINGS ROUGH. FOUND 1 EACH 206-061-432-116 HOUSING CRACKED.
- [SDR 99ZZZX3339](https://openairdocs.org/sdr/99ZZZX3339.md): Shaft · worn · Jul 14, 1999 · N427AL · Bell 407 · Tail Rotor Drive Shaft
  > FOUND 2 EACH 407-340-339-103, BEARINGS ROUGH. FOUND 206-061-432-116 HOUSING CRACKED. FOUND 406-040-320-101 SHAFT SPLINES WORN.
- [SDR 99ZZZX3338](https://openairdocs.org/sdr/99ZZZX3338.md): Housing · cracked · Jul 14, 1999 · N427AL · Bell 407 · Tail Rotor Drive System
  > FOUND 2 EACH 407-340-339-103, BEARINGS ROUGH. FOUND 206-061-432-116 HOUSING CRACKED. FOUND 406-040-320-101 SHAFT SPLINES WORN.
- [SDR 99ZZZX3337](https://openairdocs.org/sdr/99ZZZX3337.md): Bearing · rough · Jul 14, 1999 · N427AL · Bell 407 · Tail Rotor Drive System
  > FOUND 2 EACH 407-340-339-103, BEARINGS ROUGH. FOUND 206-061-432-116 HOUSING CRACKED. FOUND 406-040-320-101 SHAFT SPLINES WORN.
- [SDR 99ZZZX1239](https://openairdocs.org/sdr/99ZZZX1239.md): Bearing · worn · Mar 9, 1999 · N427AL · Bell 407 · Engine Mount Section
  > DURING INSPECTION, FOUND WORN BEARING.
- [SDR 99ZZZX1240](https://openairdocs.org/sdr/99ZZZX1240.md): Input Shaft · worn · Feb 17, 1999 · N427AL · Bell 407 · Engine/Transmission Coupling
  > F/W/U REMOVED FOR 2,500-HOUR OVERHAUL. FOUND AT TEAR-DOWN INSPECTION. INPUT SPLINES WORN BEYOND LIMITS. SHAFT SCRAPPED.
- [SDR 99ZZZX896](https://openairdocs.org/sdr/99ZZZX896.md): Bearing · worn · Jan 26, 1999 · N427AL · Bell 407 · Tail Rotor Head
  > TAIL ROTOR ASSEMBLY WAS REMOVED FOR WORN BEARINGS. FOUND THE TWO INBOARD BEARINGS BADLY WORN. THE OUTER RACE LINERS DEBONDED. THREE T/R HUBS HAVE BEEN FOUND IN THIS CONDITION. BEARING KEPT FOR POSSIBLE EVALUATION. RECOMMEND: REMOVE T/R BLADES AND INSPECT
- [SDR 98ZZZX3598](https://openairdocs.org/sdr/98ZZZX3598.md): Support · cracked · Aug 21, 1998 · N427AL · Bell 407 · Rotorcraft Tail Boom
  > DURING ROUTINE DAILY INSPECTION FOUND RT UPPER SUPPORT FITTING, FIRST FORWARD SCREW CRACKED CRESCENT SHAPED 1 INCH TO 1.50 INCHES. THE DRAWING IS OF THE LT HAND CRACK, BUT THE RT HAND CRACK IS IN A SIMILAR LOCATION.
- [SDR 98ZZZX3351](https://openairdocs.org/sdr/98ZZZX3351.md): Disc · corroded · Jul 2, 1998 · N427AL · Bell 407 · Tail Rotor Drive Shaft
  > SCHEDULED INSPECTION FOUND CORROSION AND COUPLING (PACK) SEPARATED WHEN BOLTS ARE TORQUED.
- [SDR 98ZZZX3349](https://openairdocs.org/sdr/98ZZZX3349.md): Disc · cracked · Jul 2, 1998 · N427AL · Bell 407 · Tail Rotor Drive Shaft
  > SCHEDULED INSPECTION FOUND DISC COUPLING CRACKED.
- [SDR 98ZZZX2534](https://openairdocs.org/sdr/98ZZZX2534.md): Pinion Gear · galled · Jun 8, 1998 · N427AL · Bell 407 · Turbine Engine Reduction Gear
  > UPON DISASSEMBLY OF GEARBOX AND INSPECTION OF PARTS DUE TO METAL, FOUND PINION GEAR HAD EXCESSIVE GALLING ON GEAR TEETH. POSSIBLY DUE TO IMPROPER MESHING OF GEARS. SECONDARY DAMAGE: T/M GEAR P/N 6893673 S/N NN143321. TT: 15,65.3 HOURS. SPALLING ON GEAR T
- [SDR 98ZZZX3086](https://openairdocs.org/sdr/98ZZZX3086.md): Support · cracked · May 30, 1998 · N427AL · Bell 407 · Horizontal Stabilizer Structure
  > AFTER BEING NOTIFIED THAT ONE OTHER AIRCRAFT IN FLEET HAD LOST ITS SLAT, SUBMITTER C/W VISUAL INSPECTION AND FOUND THE HORIZONTAL STABILIZER SLAT SUPPORT AT THE MID-INBOARD SUPPORT CRACKED ON THE LT SLAT, ONE EACH. ONE MID-INBOARD SLAT SUPPORT CRACKED IN RADI
- [SDR 98ZZZX2535](https://openairdocs.org/sdr/98ZZZX2535.md): Support · cracked · May 30, 1998 · N427AL · Bell 407 · Horizontal Stabilizer Structure
  > AFTER BEING NOTIFIED THAT ONE OTHER AIRCRAFT IN FLEET HAD LOST ITS SLAT, C/W A VISUAL INSPECTION AND FOUND THE HORIZONTAL STABILIZER SLAT SUPPORT AT THE MID-INBOARD SUPPORT CRACKED ON THE LT SLAT. ONE EACH. ONE MID-INBOARD SLAT SUPPORTS CRACKED IN RADIUS ARE
- [SDR 98ZZZX306](https://openairdocs.org/sdr/98ZZZX306.md): Bearing · rough · Nov 11, 1997 · N427AL · Bell 407 · Rotorcraft Cooling Fan System
  > TWENTY-FIVE HOUR INSPECTION FOUND OIL COOLER BLOWER BEARINGS ROUGH. ALSO, SHAFT SPLINES SHOW SIGNS OF LACK OF LUBRICATION. SUBMITTER RECOMMENDED IMPROVING BEARING AND LUBRICATION ON SHAFT TO COUPLING SPLINES.
- [SDR 98ZZZX305](https://openairdocs.org/sdr/98ZZZX305.md): Bearing · rough · Nov 11, 1997 · N427AL · Bell 407 · Rotorcraft Cooling Fan System
  > TWENTY-FIVE HOUR INSPECTION FOUND OIL COOLER BLOWER BEARINGS ROUGH. ALSO, SHAFT SPLINES SHOW SIGNS OF LACK OF LUBRICATION. SUBMITTER RECOMMENDED IMPROVING BEARING AND LUBRICATION ON SHAFT TO COUPLING SPLINES.
- [SDR 97ZZZX4421](https://openairdocs.org/sdr/97ZZZX4421.md): Disc Pac · cracked · Oct 2, 1997 · N427AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING DAILY INSPECTION, C/W MAINTENANCE NOTAM 52-97, FOUND CRACKED DISK IN DISC PACK.
- [SDR 97ZZZX4422](https://openairdocs.org/sdr/97ZZZX4422.md): Spring Pin · missing · Sep 25, 1997 · N427AL · Bell 407 · Auxiliary Gear (Tail Skid)
  > POST-FLIGHT INSPECTION FOUND TAIL SKID ASSEMBLY HAD DEPARTED THE AIRCRAFT, SPRING PIN WAS ALSO MISSING. SPRING PIN MUST HAVE FALLEN OUT, AND THEN TAIL SKID WITHOUT SPRING PIN TO HOLD IT ON FELL OFF THE AIRCRAFT DURING FLIGHT. PILOT DID NOT NOTICE ANYTHING UN
- [SDR 97ZZZX2857](https://openairdocs.org/sdr/97ZZZX2857.md): Fusible Plug · failed · Mar 10, 1997 · N427AL · Bell 407 · Emergency Flotation Section
  > WHILE AIRCRAFT WAS SITTING ON MAINTENANCE RAMP, NITROGEN CAME OUT OF FUSIBLE PLUG. THE INTERNAL PLUNGER CAME LOOSE OR SHEARED.

## 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 = 'N427AL' AND deregistration_id = 'N427AL-2002-06-20'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/deregistered/N427AL-2002-06-20/reports

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