# Service difficulty reports: N437AL, cancelled Aug 6, 2010

A list on [N437AL, cancelled Aug 6, 2010](https://openairdocs.org/deregistered/N437AL-2010-08-06.md).

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

- [SDR ALGA112409437AL](https://openairdocs.org/sdr/ALGA112409437AL.md): Blade · debonded · Nov 24, 2009 · N437AL · Bell 407 · Main Rotor Blades
  > DURING DAILY SERVICE CHECK, MX FOUND PREVIOUSLY INSTALLED MAIN ROTOR BLADE REPAIR DEBONDED.
- [SDR ALGA061409437AL](https://openairdocs.org/sdr/ALGA061409437AL.md): Longeron · cracked · Jun 14, 2009 · N437AL · Bell 407 · Fuselage Main, Longeron/Stringer
  > DURING ROUTINE INSP, TAILBOOM RING (FUSELAGE SIDE), SHEAR DECK/ WEB, AND LONGERON FOUND CRACKED.
- [SDR ALGA098250](https://openairdocs.org/sdr/ALGA098250.md): Bearing · binding · Nov 25, 2004 · N437AL · Bell 407 · Main Rotor Head
  > BINDING, ROUGH, AND AXIAL PLAY BEYOND MAX. REPLACED W/NEW BY FLT MAINTENANCE.
- [SDR ALG2004F00057](https://openairdocs.org/sdr/ALG2004F00057.md): Connector · dirty · Oct 7, 2004 · N437AL · Bell 407 · Electrical Connectors
  > ON TAKE OFF, RT FUEL TRANSFER LIGHT ILLUMINATED DURING TAKE OFF. MAINTENANCE FOUND MOISTURE ON TRANSFER PUMP CONNECTOR, CLEANED AND REINSTALLED, THE OPS CHECK WAS GOOD.
- [SDR ALGA096801](https://openairdocs.org/sdr/ALGA096801.md): Bearing · binding · Jul 24, 2004 · N437AL · Bell 407 · Main Rotor Blades
  > BINDING, AXIAL WEAR BEYOUND MAX, AND ROUGH. REPLACED WITH NEW PART IN FIELD.
- [SDR ALGA094925](https://openairdocs.org/sdr/ALGA094925.md): Flange · elongated · May 31, 2004 · N437AL · Bell 407 · Engine/Transmission Coupling
  > ELONGATION FOUND ON BOLT HOLES OF ADAPTER P/N: 406-040-542-107. REPLACED WITH NEW PART.
- [SDR ALGA087904](https://openairdocs.org/sdr/ALGA087904.md): Indicator · will not test · Jul 2, 2003 · N437AL · Bell 407 · Main Rotor Indicating System
  > DUAL TACH NEEDLE ON INDICATOR WILL NOT TEST.
- [SDR ALGA081620](https://openairdocs.org/sdr/ALGA081620.md): Bearing · worn · Dec 11, 2002 · N437AL · Bell 407 · Tail Rotor Head
  > FOUND 4 EA. TAIL ROTOR YOKE BEARINGS WORN. AXIAL PLAY.
- [SDR ALG2003F000I](https://openairdocs.org/sdr/ALG2003F000I.md): Stringer · cracked · Nov 11, 2002 · N437AL · Bell 407 · Fuselage Main, Longeron/Stringer
  > 11/11/02 IN FOR C/W ASB 407-02-54. WEIGHT OF CARBON FIBER DOORS. STRINGER, CRACK IS OCCURRING ON FORWARD LEFT STRINGER AT CLIP ANGLE AND STRINGER RIVETED LOCATION, WEIGHT OF DOORS AND VIBRATION. HEAVIER GAUGE STRINGER MATERIAL TO ACCOMMODATE WEIGHT OF DOORS
- [SDR ALG2003F0000A](https://openairdocs.org/sdr/ALG2003F0000A.md): Stringer · cracked · Nov 11, 2002 · N437AL · Bell 407 · Landing Gear Doors
  > IN FOR C/W ASB 4070254, WEIGHT OF CARBON FIBER DOORS. CRACK IS OCCURING ON FORWARD LEFT STRINGER AT CLIP ANGLE AND STRINGER RIVETED LOCATION, WEIGHT OF DOORS AND VIBRATION. HEAVIER GAUGE STRINGER MATERIAL TO ACCOMODATE WEIGHT OF DOORS.
- [SDR ALG2002F00023](https://openairdocs.org/sdr/ALG2002F00023.md): Crosstube · corroded · Feb 21, 2002 · N437AL · Bell 407 · Main Landing Gear Strut/Axle/Truck
  > DAILY SERVICE CHECK, FOUND HEAVY PITTING CORROSION UNDER WEAR PADS. SCRAPPED CROSSTUBE. PROBABLE CAUSE IS WATER ENTRAPMENT. EXTENT OF CORROSION ALMOST UNDETECTABLE WITH ALL PARTS INSTALLED. RECOMMEND INSPECTION BE DONE WITH CROSSTUBE REMOVED FROM AIRCRAFT
- [SDR 2001F00611](https://openairdocs.org/sdr/2001F00611.md): Disc Pack · cracked · Aug 22, 2001 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > DAILY INSPECTION OF TAILROTOR DRIVESHAFT BEARINGS AND FOUND CRACKED DISC PACK. THE 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 ALG2001F00002](https://openairdocs.org/sdr/ALG2001F00002.md): Bevel Gear · cracked · May 18, 2001 · N437AL · Bell 407 · Main Rotor Gearbox
  > TRANSMISSION MAKING METAL. BEVEL GEAR CRACKED FROM BOLT HOLE.
- [SDR ALG2001F00005](https://openairdocs.org/sdr/ALG2001F00005.md): Bearing · separated · Mar 27, 2001 · N437AL · Bell 407 · Tail Rotor Blades
  > OCCURED DURING DAILY. ELASTOMER SEPARATION.
- [SDR 20000804SH023](https://openairdocs.org/sdr/20000804SH023.md): Disc Pack · cracked · Jul 10, 2000 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING PHASE INSPECTION, VISUAL INSPECTION OF TAILROTOR DRIVESHAFT FOUND ONE SEGMENT OF DISC PACK OF NR 6 DRIVESHAFT CRACKED. FORWARD SEGMENT CRACKED ACROSS THE SPAN. (X)
- [SDR 20000412SH037](https://openairdocs.org/sdr/20000412SH037.md): Support Bracket · cracked · Mar 5, 2000 · N437AL · Bell 407 · Rotorcraft Tail Boom
  > DURING DAILY INSPECTION, FOUND SUPPORT WITH STRESS CRACKS IN RADIUS FROM WHEN THE SUPPORT WAS MANUFACTURED. (X)
- [SDR 20000412SH036](https://openairdocs.org/sdr/20000412SH036.md): Bearing · rough · Mar 5, 2000 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > BEARINGS NOISEY AND ROUGH. REMOVED AND REPLACED 2 EACH BEARINGS. (X)
- [SDR 20000412SH035](https://openairdocs.org/sdr/20000412SH035.md): Bearing · rough · Mar 5, 2000 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > BEARINGS NOISEY AND ROUGH. REMOVED AND REPLACED 2 EACH BEARINGS. (X)
- [SDR 2000ZZZX434](https://openairdocs.org/sdr/2000ZZZX434.md): Disc Pack · cracked · Dec 25, 1999 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING 25-HOUR AD INSPECTION, NR 7 DISC PACK CRACKED IN ONE LOCATION ON AFT DISC.
- [SDR 2000ZZZX17](https://openairdocs.org/sdr/2000ZZZX17.md): Housing · cracked · Nov 11, 1999 · N437AL · Bell 407 · Rotorcraft Cooling Fan System
  > DURING DAILY INSPECTION, FOUND BLOWER HOUSING CRACKED.
- [SDR 99ZZZX4586](https://openairdocs.org/sdr/99ZZZX4586.md): Panel · cracked · Oct 29, 1999 · N437AL · Bell 407 · Fuselage Miscellaneous Structure
  > DURING TAILROTOR DRIVESHAFT REPLACEMENT. OIL COOLER BLOWER DECK IS CRACKED AND THE OIL COOLER TRANSITION DUCT IS CRACKED.
- [SDR 99ZZZX4566](https://openairdocs.org/sdr/99ZZZX4566.md): Disc Pack · cracked · Oct 12, 1999 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING 25-HOUR AD INSPECTION, FOUND NR 7 TAILROTOR DISC CRACKED IN TWO PLACES.
- [SDR 99ZZZX4582](https://openairdocs.org/sdr/99ZZZX4582.md): Disc Pack · cracked · Oct 5, 1999 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING 25-HOUR AD INSPECTION. 50-HOUR PMI LAST 50-HOUR INSPECTION DONE AT 2,867.5 HOURS. AFT LAMINATE OF NR 6 DISC PACK CRACKED.
- [SDR 99ZZZX4033](https://openairdocs.org/sdr/99ZZZX4033.md): Disc Pack · cracked · Sep 18, 1999 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING 50-HOUR INSPECTION, FOUND NR 7 DISC PACK CRACKED AT AFT DISC. IT IS CRACKED IN 3 LOCATIONS ON AFT DISC. DISC PACK WAS 76.8 HOURS TT ON AIRCRAFT.
- [SDR 99ZZZX4032](https://openairdocs.org/sdr/99ZZZX4032.md): Bearing · damaged · Sep 16, 1999 · N437AL · Bell 407 · Main Rotor Head
  > DURING DAILY INSPECTION, FOUND ELASTOMERIC EXTRUSION AND SEPARATION.
- [SDR 99ZZZX4031](https://openairdocs.org/sdr/99ZZZX4031.md): Bearing · damaged · Sep 16, 1999 · N437AL · Bell 407 · Main Rotor Head
  > DURING DAILY INSPECTION, FOUND ELASTOMERIC EXTRUSION AND SEPARATION.
- [SDR 99ZZZX4030](https://openairdocs.org/sdr/99ZZZX4030.md): Bearing · damaged · Sep 16, 1999 · N437AL · Bell 407 · Main Rotor Head
  > DURING DAILY INSPECTION, FOUND ELASTOMERIC EXTRUSION AND SEPARATION.
- [SDR 99ZZZX3524](https://openairdocs.org/sdr/99ZZZX3524.md): Disc Pack · cracked · Aug 21, 1999 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > ONE DISC ON AFT SIDE OF THE DISC PACK CRACKED IN HALF. INSTALLED DISC PACK S/N RNFS-2938, FOUND AT AIR LOGISTICS LLC, HOUMA BASE.
- [SDR 99ZZZX3031](https://openairdocs.org/sdr/99ZZZX3031.md): Disc Pack · cracked · Jun 26, 1999 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING PHASE INSPECTION, DISC PACK CRACKED.
- [SDR 99ZZZX3030](https://openairdocs.org/sdr/99ZZZX3030.md): Disc Pack · cracked · Jun 26, 1999 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING PHASE INSPECTION, DISC PACK CRACKED.
- [SDR 99ZZZX3346](https://openairdocs.org/sdr/99ZZZX3346.md): Shaft · worn · Mar 17, 1999 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > FOUND SPLINES WORN BEYOND LIMITS (406-040-320-101). FOUND HOUSING CRACKED (206-061-432-116). FOUND 2 EACH BEARINGS ROUGH (407-340-339-103). TT 4.77.4 HOURS.
- [SDR 98ZZZX3097](https://openairdocs.org/sdr/98ZZZX3097.md): Bearing · galled · Jul 13, 1998 · N437AL · Bell 407 · Turbine Engine Reduction Gear
  > ENGINE REMOVED FROM AIRCRAFT FOR CHIP LIGHT. UPON INSPECTION OF PARTS, FOUND EXCESSIVE GALLING ON T/M JOURNAL INNER RACE AND ROLLERS. EXCESSIVE GALLING ON T/M JOURNAL BEARIANG INNER RACE AND ROLLERS.
- [SDR 98ZZZX3096](https://openairdocs.org/sdr/98ZZZX3096.md): Nozzle · failed · Jul 13, 1998 · N437AL · Bell 407 · Fuel Injector Nozzle
  > TURBINE AND FUEL NOZZLE SENT TO SHOP FOR ENGINE MAKING METAL. REMOVED FUEL NOZZLE FROM COMBUSTION SECTION AND FOUND HEAVY CARBON BUILD-UP ON BOTTOM OF SHROUD HOUSING AND ALSO CARBON BUILD-UP INSIDE COMBUSTION LINER. FUEL NOZZLE WAS SHIMMED AT.341 INCH. CAR
- [SDR 98ZZZX3350](https://openairdocs.org/sdr/98ZZZX3350.md): Bearing · failed · Jul 2, 1998 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > SCHEDULED INSPECTION FOUND NR 2 DRIVE SHAFT BEARING ROUGH AND NOISY.
- [SDR 98ZZZX3098](https://openairdocs.org/sdr/98ZZZX3098.md): Disc Pack · cracked · Jul 2, 1998 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > SCHEDULED INSPECTION FOUND DISK PACK CRACKED.
- [SDR 98ZZZX3347](https://openairdocs.org/sdr/98ZZZX3347.md): Disk · cracked · Jun 6, 1998 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING PHASE INSPECTION AND C/W AD 97-24-17, 25-HOUR INSPECTION FOUND CRACKED DISK (9TH) FACING AFT.
- [SDR 98ZZZX1253](https://openairdocs.org/sdr/98ZZZX1253.md): Disc Pack · cracked · Feb 12, 1998 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING 25-HOUR INPSECTION, FOUND ONE DISC IN PACK ASSEMBLY CRACKED. IT WAS THE NR 1 DISC IN THE PACK.
- [SDR 98ZZZX1254](https://openairdocs.org/sdr/98ZZZX1254.md): Disc Pack · cracked · Jan 18, 1998 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > ON PHASE NR 1 INSPECTION WHILE DOING AD 97-24-17 100-HOUR BLOWER INSPECTION, FOUND DISC NR 1 OF 10, TOTAL, CRACKED (STARTING FRONT TO BACK).
- [SDR 98ZZZX244](https://openairdocs.org/sdr/98ZZZX244.md): Disk Pack · cracked · Dec 22, 1997 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > DISCOVERED DURING 25 HOUR INSPECTION, T/R DRIVE SHAFT NR 5 DISK PACK CRACKED ON AFT SIDE IN 2 PLACES.
- [SDR 98ZZZX248](https://openairdocs.org/sdr/98ZZZX248.md): Disk Pack · cracked · Nov 21, 1997 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > FOUND DURING 25 HOUR AD INSPECTION, T/R DRIVESHAFT DISK PACK NR 5 HAS CRACKED COUPLING. CRACKED ON AFT SIDE OF COUPLING. PACK CONSISTS OF 1 DISK.
- [SDR 98ZZZX310](https://openairdocs.org/sdr/98ZZZX310.md): Disc Pack · cracked · Nov 10, 1997 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > AD 97-22-15, 25-HOUR TAIL BOOM INSPECTION FOUND CRACKED DISCS NR 2 TO NR 3, NR 1 DISC IN PACK CRACKED, NR 5 TO NR 6 LOCATION NR 10 DISC IN PACK CRACKED. SUBMITTER RECOMMENDED FLOATING DRIVESHAFTS SIMILAR TO THE BELL 206 SERIES.
- [SDR 97ZZZX4904](https://openairdocs.org/sdr/97ZZZX4904.md): Disc Pack · cracked · Nov 2, 1997 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > ON 50-HOUR P.M.I., AND AD 97-22-15, FOUND NR 10 OF 10 DISC CRACKED IN 2 PLACES.
- [SDR 97ZZZX4910](https://openairdocs.org/sdr/97ZZZX4910.md): Disc Pack · cracked · Oct 29, 1997 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING 50-HOUR PMI AND MAINTENANCE NOTAM NR 51B-97, FOUND NR 1 DISC IN PACK ASSEMBLY OF 10 DISC TOTAL, CRACKED IN TWO PLACES.
- [SDR 97ZZZX4909](https://openairdocs.org/sdr/97ZZZX4909.md): Damper Assy · deteriorated · Oct 23, 1997 · N437AL · Bell 407 · Main Rotor Head
  > DAILY INSPECTION FOUND FRAHM DAMPER ASSY RUBBER DETERIORATING AND STICKING OUT OF DAMPER.
- [SDR 97ZZZX4932](https://openairdocs.org/sdr/97ZZZX4932.md): Disc Pack · cracked · Oct 13, 1997 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > DAILY VISUAL INSPECTION OF TAILBOOM IAW NOTAM NR 51A-97, NR 5 TO NR 6 DISC PACK (T/R D/S) ASSEMBLY. ONLY ONE DISC FOUND CRACKED IN THE NR 10 POSITION OUT OF 10 DISCS. 57.8 HOURS TOTAL TIME ON DISC PACK FROM LAST CRACKED DISC.
- [SDR 97ZZZX4906](https://openairdocs.org/sdr/97ZZZX4906.md): Mast Nut · loose · Sep 30, 1997 · N437AL · Bell 407 · Tail Rotor Drive System
  > DAILY INSPECTION FOUND COMPLETE LOSS OF TORQUE ON T/R MAST NUT. THE NUT COULD BE REMOVED BY HAND. THE SAFETY WIRE BETWEEN THE NUT AND THE SUPPORT, (P/N 407-012-106-103) KEPT THE NUT FROM SPINNING OFF OF THE TAIL ROTOR GEARBOX OUTPUT SHAFT.
- [SDR 97ZZZX4471](https://openairdocs.org/sdr/97ZZZX4471.md): Spring Pin · broken · Sep 27, 1997 · N437AL · Bell 407 · Auxiliary Gear (Tail Skid)
  > PIN WAS BEING REMOVED TO INSTALL AN AN4-15A BOLT IN ITS PLACE AS A PRECAUTION AFTER THE TAIL SKID OF ANOTHER 407 AIRCRAFT FELL OFF IN-FLIGHT. WHEN THE SPRING PIN WAS REMOVED, IT CAME APART IN TWO PIECES. SUBMITTER STATED INSTALL AN4 BOLT IN PLACE OF THE SPRI
- [SDR 97ZZZX4907](https://openairdocs.org/sdr/97ZZZX4907.md): Disc · cracked · Sep 24, 1997 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > SCHEDULED INSPECTION FOUND DISC CRACKED.
- [SDR 97ZZZX4905](https://openairdocs.org/sdr/97ZZZX4905.md): Disc · cracked · Sep 9, 1997 · N437AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING DAILY INSPECTION, FOUND T/R DRIVE DISC HAS CRACK STARTING ON INSIDE DIAMETER GOING TOWARDS OUTSIDE DIAMETER, NR 1 DISC (FIRST ON PACK).
- [SDR 97ZZZX4470](https://openairdocs.org/sdr/97ZZZX4470.md): Frahm Assy · deteriorated · Aug 26, 1997 · N437AL · Bell 407 · Main Rotor Head
  > LATERAL VIBRATION IN AIRCRAFT. FOUND ALL RUBBER PARTS DETERIORATED (ERASER TYPE WEAR) INSIDE FRAHM ASSEMBLY.

## 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 = 'N437AL' AND deregistration_id = 'N437AL-2010-08-06'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/deregistered/N437AL-2010-08-06/reports

---
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