# N437AL: 1997 Bell Helicopter Textron Canada 407, registration cancelled 2010-08-06 - Type: Cancelled registration (FAA registry, deregistered aircraft) - Cancelled: August 6, 2010 - Exported to: Papua New Guinea - Status when cancelled: Valid registration - Airframe: [Bell Helicopter Textron Canada 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (registry code 1182154) - Engine: [Allison 250-C47B](https://openairdocs.org/engine/allison-250-c47b) (registry code 03109) - Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW), [TCDS E1GL](https://openairdocs.org/tcds/E1GL) (OpenAirDocs) - Serial number: 53141 - Year built: 1997 - Type of aircraft: Rotorcraft - Engine type: Turbo-shaft - Airworthiness: Standard, normal - Airworthiness date: May 8, 1997 - Certificate issued: July 22, 2010 - Last registry action: July 22, 2010 - Mode S code: A53D2A - Owner when cancelled: [Bristow U.S. LLC](https://openairdocs.org/faa-owner/BRISTOW%20U.S.%20LLC) - Location: [New Iberia, LA](https://openairdocs.org/faa-place/LA/New%20Iberia) - Owner type: Corporation - Owner's area on the map: 29.9367° N, 91.8653° W: Placed by OpenAirDocs at the center of ZIP code 70560, within about 7 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based - The mark today: https://openairdocs.org/aircraft/N437AL - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=437AL - Page: https://openairdocs.org/deregistered/N437AL-2010-08-06 From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe. ADs and bulletins for the Bell Helicopter Textron Canada 407: https://openairdocs.org/model/bell-helicopter-textron-canada-407.md ## Service difficulty reports (50) Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR ALGA112409437AL](https://openairdocs.org/sdr/ALGA112409437AL), Nov 24, 2009: BLADE. DEBONDED. DURING DAILY SERVICE CHECK, MX FOUND PREVIOUSLY INSTALLED MAIN ROTOR BLADE REPAIR DEBONDED. - [SDR ALGA061409437AL](https://openairdocs.org/sdr/ALGA061409437AL), Jun 14, 2009: LONGERON. CRACKED. DURING ROUTINE INSP, TAILBOOM RING (FUSELAGE SIDE), SHEAR DECK/ WEB, AND LONGERON FOUND CRACKED. - [SDR ALGA098250](https://openairdocs.org/sdr/ALGA098250), Nov 25, 2004: BEARING. BINDING. BINDING, ROUGH, AND AXIAL PLAY BEYOND MAX. REPLACED W/NEW BY FLT MAINTENANCE. - [SDR ALG2004F00057](https://openairdocs.org/sdr/ALG2004F00057), Oct 7, 2004: CONNECTOR. DIRTY. ON TAKE OFF, RT FUEL TRANSFER LIGHT ILLUMINATED DURING TAKE OFF. MAINTENANCE FOUND MOISTURE ON TRANSFER PUMP CONNECTOR, CLEANED AND REINSTALLED, THE OPS CHECK W - [SDR ALGA096801](https://openairdocs.org/sdr/ALGA096801), Jul 24, 2004: BEARING. BINDING. BINDING, AXIAL WEAR BEYOUND MAX, AND ROUGH. REPLACED WITH NEW PART IN FIELD. - [SDR ALGA094925](https://openairdocs.org/sdr/ALGA094925), May 31, 2004: FLANGE. ELONGATED. ELONGATION FOUND ON BOLT HOLES OF ADAPTER P/N: 406-040-542-107. REPLACED WITH NEW PART. - [SDR ALGA087904](https://openairdocs.org/sdr/ALGA087904), Jul 2, 2003: INDICATOR. WILL NOT TEST. DUAL TACH NEEDLE ON INDICATOR WILL NOT TEST. - [SDR ALGA081620](https://openairdocs.org/sdr/ALGA081620), Dec 11, 2002: BEARING. WORN. FOUND 4 EA. TAIL ROTOR YOKE BEARINGS WORN. AXIAL PLAY. - [SDR ALG2003F000I](https://openairdocs.org/sdr/ALG2003F000I), Nov 11, 2002: STRINGER. CRACKED. 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 LOCATI - [SDR ALG2003F0000A](https://openairdocs.org/sdr/ALG2003F0000A), Nov 11, 2002: STRINGER. CRACKED. 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 AN - [SDR ALG2002F00023](https://openairdocs.org/sdr/ALG2002F00023), Feb 21, 2002: CROSSTUBE. CORRODED. DAILY SERVICE CHECK, FOUND HEAVY PITTING CORROSION UNDER WEAR PADS. SCRAPPED CROSSTUBE. PROBABLE CAUSE IS WATER ENTRAPMENT. EXTENT OF CORROSION ALMOST UNDETECTA - [SDR 2001F00611](https://openairdocs.org/sdr/2001F00611), Aug 22, 2001: DISC PACK. CRACKED. DAILY INSPECTION OF TAILROTOR DRIVESHAFT BEARINGS AND FOUND CRACKED DISC PACK. THE COUPLING IS CRACKED, PROBABLE CAUSE IS EXCESSIVE RIGIDITY IN THE BEARING MOUN - [SDR ALG2001F00002](https://openairdocs.org/sdr/ALG2001F00002), May 18, 2001: BEVEL GEAR. CRACKED. TRANSMISSION MAKING METAL. BEVEL GEAR CRACKED FROM BOLT HOLE. - [SDR ALG2001F00005](https://openairdocs.org/sdr/ALG2001F00005), Mar 27, 2001: BEARING. SEPARATED. OCCURED DURING DAILY. ELASTOMER SEPARATION. - [SDR 20000804SH023](https://openairdocs.org/sdr/20000804SH023), Jul 10, 2000: DISC PACK. CRACKED. DURING PHASE INSPECTION, VISUAL INSPECTION OF TAILROTOR DRIVESHAFT FOUND ONE SEGMENT OF DISC PACK OF NR 6 DRIVESHAFT CRACKED. FORWARD SEGMENT CRACKED ACROSS THE - [SDR 20000412SH037](https://openairdocs.org/sdr/20000412SH037), Mar 5, 2000: SUPPORT BRACKET. CRACKED. DURING DAILY INSPECTION, FOUND SUPPORT WITH STRESS CRACKS IN RADIUS FROM WHEN THE SUPPORT WAS MANUFACTURED. (X) - [SDR 20000412SH036](https://openairdocs.org/sdr/20000412SH036), Mar 5, 2000: BEARING. ROUGH. BEARINGS NOISEY AND ROUGH. REMOVED AND REPLACED 2 EACH BEARINGS. (X) - [SDR 20000412SH035](https://openairdocs.org/sdr/20000412SH035), Mar 5, 2000: BEARING. ROUGH. BEARINGS NOISEY AND ROUGH. REMOVED AND REPLACED 2 EACH BEARINGS. (X) - [SDR 2000ZZZX434](https://openairdocs.org/sdr/2000ZZZX434), Dec 25, 1999: DISC PACK. CRACKED. DURING 25-HOUR AD INSPECTION, NR 7 DISC PACK CRACKED IN ONE LOCATION ON AFT DISC. - [SDR 2000ZZZX17](https://openairdocs.org/sdr/2000ZZZX17), Nov 11, 1999: HOUSING. CRACKED. DURING DAILY INSPECTION, FOUND BLOWER HOUSING CRACKED. - [SDR 99ZZZX4586](https://openairdocs.org/sdr/99ZZZX4586), Oct 29, 1999: PANEL. CRACKED. 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), Oct 12, 1999: DISC PACK. CRACKED. DURING 25-HOUR AD INSPECTION, FOUND NR 7 TAILROTOR DISC CRACKED IN TWO PLACES. - [SDR 99ZZZX4582](https://openairdocs.org/sdr/99ZZZX4582), Oct 5, 1999: DISC PACK. CRACKED. 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), Sep 18, 1999: DISC PACK. CRACKED. 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), Sep 16, 1999: BEARING. DAMAGED. DURING DAILY INSPECTION, FOUND ELASTOMERIC EXTRUSION AND SEPARATION. - [SDR 99ZZZX4031](https://openairdocs.org/sdr/99ZZZX4031), Sep 16, 1999: BEARING. DAMAGED. DURING DAILY INSPECTION, FOUND ELASTOMERIC EXTRUSION AND SEPARATION. - [SDR 99ZZZX4030](https://openairdocs.org/sdr/99ZZZX4030), Sep 16, 1999: BEARING. DAMAGED. DURING DAILY INSPECTION, FOUND ELASTOMERIC EXTRUSION AND SEPARATION. - [SDR 99ZZZX3524](https://openairdocs.org/sdr/99ZZZX3524), Aug 21, 1999: DISC PACK. CRACKED. 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), Jun 26, 1999: DISC PACK. CRACKED. DURING PHASE INSPECTION, DISC PACK CRACKED. - [SDR 99ZZZX3030](https://openairdocs.org/sdr/99ZZZX3030), Jun 26, 1999: DISC PACK. CRACKED. DURING PHASE INSPECTION, DISC PACK CRACKED. - [SDR 99ZZZX3346](https://openairdocs.org/sdr/99ZZZX3346), Mar 17, 1999: SHAFT. WORN. 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), Jul 13, 1998: BEARING. GALLED. 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 J - [SDR 98ZZZX3096](https://openairdocs.org/sdr/98ZZZX3096), Jul 13, 1998: NOZZLE. FAILED. 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 HO - [SDR 98ZZZX3350](https://openairdocs.org/sdr/98ZZZX3350), Jul 2, 1998: BEARING. FAILED. SCHEDULED INSPECTION FOUND NR 2 DRIVE SHAFT BEARING ROUGH AND NOISY. - [SDR 98ZZZX3098](https://openairdocs.org/sdr/98ZZZX3098), Jul 2, 1998: DISC PACK. CRACKED. SCHEDULED INSPECTION FOUND DISK PACK CRACKED. - [SDR 98ZZZX3347](https://openairdocs.org/sdr/98ZZZX3347), Jun 6, 1998: DISK. CRACKED. 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), Feb 12, 1998: DISC PACK. CRACKED. 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), Jan 18, 1998: DISC PACK. CRACKED. 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), Dec 22, 1997: DISK PACK. CRACKED. 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), Nov 21, 1997: DISK PACK. CRACKED. 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), Nov 10, 1997: DISC PACK. CRACKED. 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. SUBMITT - [SDR 97ZZZX4904](https://openairdocs.org/sdr/97ZZZX4904), Nov 2, 1997: DISC PACK. CRACKED. 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), Oct 29, 1997: DISC PACK. CRACKED. 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), Oct 23, 1997: DAMPER ASSY. DETERIORATED. DAILY INSPECTION FOUND FRAHM DAMPER ASSY RUBBER DETERIORATING AND STICKING OUT OF DAMPER. - [SDR 97ZZZX4932](https://openairdocs.org/sdr/97ZZZX4932), Oct 13, 1997: DISC PACK. CRACKED. 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 - [SDR 97ZZZX4906](https://openairdocs.org/sdr/97ZZZX4906), Sep 30, 1997: MAST NUT. LOOSE. 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- - [SDR 97ZZZX4471](https://openairdocs.org/sdr/97ZZZX4471), Sep 27, 1997: SPRING PIN. BROKEN. 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 PI - [SDR 97ZZZX4907](https://openairdocs.org/sdr/97ZZZX4907), Sep 24, 1997: DISC. CRACKED. SCHEDULED INSPECTION FOUND DISC CRACKED. - [SDR 97ZZZX4905](https://openairdocs.org/sdr/97ZZZX4905), Sep 9, 1997: DISC. CRACKED. 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), Aug 26, 1997: FRAHM ASSY. DETERIORATED. LATERAL VIBRATION IN AIRCRAFT. FOUND ALL RUBBER PARTS DETERIORATED (ERASER TYPE WEAR) INSIDE FRAHM ASSEMBLY. ## Other aircraft with N437AL - [Registered now](https://openairdocs.org/aircraft/N437AL): Piper PA-34-220T, S/N 348133156, built 1981 --- 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.