# Service difficulty reports: N577AL, cancelled May 15, 2019

A list on [N577AL, cancelled May 15, 2019](https://openairdocs.org/deregistered/N577AL-2019-05-15.md).

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

- [SDR ALGA2017060842621](https://openairdocs.org/sdr/ALGA2017060842621.md): Bearing · damaged · May 30, 2017 · N577AL · Bell 407 · Engine (Turbine/Turboprop)
  > DURING LANDING, ENGINE CHIP LIGHT ILUMINATED, FOLLOWED BY A GRINDING NOISE THEN LOSS OF OIL PRESSURE. NR 8 BEARING FOUND DAMAGED.
- [SDR ALGA0409201329919](https://openairdocs.org/sdr/ALGA0409201329919.md): Cartridge · clogged · Apr 6, 2013 · N577AL · Bell 407 · Fuel Boost Pump
  > ABOUT 10 MILES OFF OF BEACH LINE, THE BOOST PUMP CAME ON. PILOT TURNED ACFT AROUND AND RETURNED TO BASE. REPLACED LT BOOST PUMP CARTRIDGE.
- [SDR ALGA2012050701](https://openairdocs.org/sdr/ALGA2012050701.md): O-Ring · leaking · May 7, 2012 · N577AL · Bell 407 · Tail Rotor Control System
  > PERFORM FUNCTIONAL CHECK, FOUND O-RING ON DIFFERENTIAL VALVE FAILED, CAUSING INTERNAL FLUID BYPASS. REPLACED O-RING.
- [SDR ALGA2012032601](https://openairdocs.org/sdr/ALGA2012032601.md): Mount · corroded · Mar 26, 2012 · N577AL · Bell 407 · Main Rotor Transmission Mount
  > CORROSION AT TRANSMISSION MOUNTS BEYOND LIMITS.
- [SDR ALGA1012421121](https://openairdocs.org/sdr/ALGA1012421121.md): Tube · corroded · Jan 11, 2012 · N577AL · Bell 407 · Main Rotor Control
  > REPLACED TUBE DUE TO CORROSION BEYOND LIMITS.
- [SDR ALGA1311611212](https://openairdocs.org/sdr/ALGA1311611212.md): Rod End · worn · Jan 11, 2012 · N577AL · Bell 407 · Main Rotor Control
  > ROD END WORN BEYOND REPAIRABLE LIMITS.
- [SDR ALGAR101811532471](https://openairdocs.org/sdr/ALGAR101811532471.md): Seat Track · cracked · Oct 16, 2011 · N577AL · Bell 407 · Fuselage, Seat/Cargo Attach Fittings
  > FWD SEAT TRACK CRACKED.
- [SDR ALG2005F00065](https://openairdocs.org/sdr/ALG2005F00065.md): Indicator · failed · Aug 24, 2005 · N577AL · Bell 407 · Engine RPM Indicating System
  > ON TAKEOFF, NG INDICATOR PEGGED OUT. RETURNED TO BASE AND NOTIFIED MAINTENANCE. REMOVED AND REPLACED INDICATOR WITH SERVICEABLE UNIT. FUNCTIONAL CHECK OK. IAW MM. (K)
- [SDR ALG2004F00013](https://openairdocs.org/sdr/ALG2004F00013.md): Spring · misaligned · Mar 10, 2004 · N577AL · Bell 407 · Main Rotor Head
  > SLIGHT VIBRATION ON LANDING, CHECKED ROTOR SYSTEM ON POST FLIGHT AND FOUND FRAHM DAMPER SPRING MISALIGNED. MAINTENANCE FOUND BROKEN SPRING IN FRAHM DAMPER. REMOVED AND REPLACED FRAHM DAMPER.
- [SDR ALGA086243](https://openairdocs.org/sdr/ALGA086243.md): Bearing · defective · Apr 23, 2003 · N577AL · Bell 407 · Main Rotor Head
  > FOUND BEARING DEFECTIVE, EXCESSIVE PLAY AND ROUGH/RATCHETING.
- [SDR ALGA082773](https://openairdocs.org/sdr/ALGA082773.md): Bearing · worn · Jan 2, 2003 · N577AL · Bell 407 · Tail Rotor Head
  > DURING COMPLIANCE OF ASB, FOUND TAIL ROTOR HEAD BEARINGS HAD EXCESSIVE AXIAL PLAY.
- [SDR ALGA082682](https://openairdocs.org/sdr/ALGA082682.md): Pitch Horn · corroded · Dec 24, 2002 · N577AL · Bell 407 · Tail Rotor Head
  > STARTING TO SEE A TREND OF NUMEROUS PITCH HORNS WITH CORROSION PROBLEMS, IN BARREL NUT BORE.
- [SDR ALGA081630](https://openairdocs.org/sdr/ALGA081630.md): Bearing · worn · Dec 11, 2002 · N577AL · Bell 407 · Main Rotor Gearbox
  > COOLER BLOWER BEARING IS ROUGH IN ROTATION.
- [SDR ALG2003F00007](https://openairdocs.org/sdr/ALG2003F00007.md): Frame · cracked · Dec 8, 2002 · N577AL · Bell 407 · Fuselage Main, Frame
  > DISCOVERED WHEN FRAME WAS REMOVED TO REMOVE AND REPLACE RIVETS ON TAILBOOM ATTACH FITTING. (RIGHT UPPER FITTING) IT HAS BECOME GOOD PRACTICE TO CHECK THIS AREA BECAUSE OF PAST PROBLEMS. THE FRAME HAS BEEN FOUND TO CRACK IN THIS SAME AREA ON ALL AIRCRAFT THAT
- [SDR ALG2003F218](https://openairdocs.org/sdr/ALG2003F218.md): Skin · cracked · Dec 3, 2002 · N577AL · Bell 407 · Fuselage Main, Plate/Skin
  > DURING DAILY INSPECTION, CRACKS, CORROSION, BROKEN SPOT WELDS, HINGES WORN OUT. SKIN CORROSION AT SPOT WELDS BECAUSE OF NON-ALCLAD MATERIAL. HEAVIER GAUGE MATERIAL ON STRINGERS NEEDED.
- [SDR ALG2003F00019](https://openairdocs.org/sdr/ALG2003F00019.md): Door · cracked · Dec 3, 2002 · N577AL · Bell 407 · Doors
  > LT ENGINE BAY DOOR LOWER RECTANGLE SCREEN IS CRACKED AND UPPER 2ND FRONT FORWARD SQUARE SCREEN CRACKED. LT AND RT ENGINE BAY DOORS. CHAFING OCCURRING ON LOWER AND FORWARD EDGE OF DOORS. LATCHES EXCESSIVE WEAR. FASTENERS ON FORWARD AFT EDGE HAS EXCESSIVE WE
- [SDR ALG2003F00020](https://openairdocs.org/sdr/ALG2003F00020.md): Blade · damaged · Sep 27, 2002 · N577AL · Bell 407 · Turbine Engine Compressor Section
  > WHILE HOVERING ONTO THE PARKING PAD, THE PILOT HEARD AN UNUSUAL SOUND FROM THE AIRCRAFT, UPON LANDING THE SUBSEQUENT INSPECTION REVEALED DAMAGE TO THE COMPRESSOR BLADE CAUSED BY A SMALL PIECE OF INTAKE SHELF INGESTED BY THE ENGINE. THE ENTIRE ENGINE WAS REMOV
- [SDR ALGA079296](https://openairdocs.org/sdr/ALGA079296.md): Bearing · galled · May 28, 2002 · N577AL · Bell 407 · Turbine Engine Reduction Gear
  > T/M JOURNAL AND INNER RACE FOUND EXCESSIVE GALLING, CAUSING METAL CONTAMINATION.
- [SDR ALGA079295](https://openairdocs.org/sdr/ALGA079295.md): Gear · galled · May 28, 2002 · N577AL · Bell 407 · Turbine Engine Reduction Gear
  > FOUND EXCESSIVE GALLING ON PINION GEAR, SPALLING AND GALLING ON T/M GEAR. BOTH GEARS HAVE VERY UNUSUAL WEAR PATTERN. ENTRY MADE BY RNB.
- [SDR ALGA079294](https://openairdocs.org/sdr/ALGA079294.md): Pinion Gear · galled · May 28, 2002 · N577AL · Bell 407 · Turbine Engine Reduction Gear
  > FOUND EXCESSIVE GALLING ON PINION GEAR, SPALLING AND GALLING ON T/M GEAR. BOTH GEARS HAVE VERY UNUSUAL WEAR PATTERN. ENTRY MADE BY RNB
- [SDR ALG2002F00040](https://openairdocs.org/sdr/ALG2002F00040.md): Pinion Gear · worn · May 12, 2002 · N577AL · Bell 407 · Turbine Engine Reduction Gear
  > ENGINE WAS REMOVED DUE TO CHIP LIGHT. GEARBOX WAS DISASSEMBLED TO FIND SOURCE OF METAL. FOUND EXCESSIVE GALLING ON PINION GEAR, SPALLING AND GALLING ON T/M GEAR. BOTH GEARS HAVE VERY UNUSUAL WEAR PATTERN. ASSURE PROPER MESHING AND MACHINING OF GEAR TEETH A
- [SDR ALG2002F00039](https://openairdocs.org/sdr/ALG2002F00039.md): Pinion Gear · worn · May 12, 2002 · N577AL · Bell 407 · Turbine Engine Reduction Gear
  > ENGINE WAS REMOVED DUE TO CHIP LIGHT. GEARBOX WAS DISASSEMBLED TO FIND SOURCE OF METAL. FOUND EXCESSIVE GALLING ON PINION GEAR, SPALLING AND GALLING ON T/M GEAR. BOTH GEARS HAVE VERY UNUSUAL WEAR PATTERN. ASSURE PROPER MESHING AND MACHINING OF GEAR TEETH
- [SDR ALG2002F00035](https://openairdocs.org/sdr/ALG2002F00035.md): Bearing · galled · May 12, 2002 · N577AL · Bell 407 · Turbine Engine Reduction Gear
  > ENGINE WAS REMOVED DUE TO CHIP LIGHT. GEARBOX WAS DISASSEMBLED TO FIND SOURCE OF METAL. UPON REMOVAL OF T/M JOURNAL AND INNER RACE FOUND EXCESSIVE GALLING, CAUSING METAL CONTAMINATION. ASSURE BEARINGS AND INNER RACE CAN WITH STAND HIGH LOADING CAPACITY.
- [SDR ALG2002F00006](https://openairdocs.org/sdr/ALG2002F00006.md): Disc Pack · broken · Dec 20, 2001 · N577AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING 25 HOUR AD INSPECTION, BROKEN DISC IN DISC PACK. ALLOW TAIL ROTOR DRIVE SHAFT TO FLOAT SO DISC PACKS DO NOT FLEX AS MUCH OR AS OFTEN.
- [SDR ALG2002F00017](https://openairdocs.org/sdr/ALG2002F00017.md): Bearing · making metal · Sep 30, 2001 · N577AL · Bell 407 · Main Rotor Gearbox
  > METAL WAS FOUND ON CHIP PLUGS, ENGINE AND GEARBOX DISASSEMBLED FOR INSPECTION. FOUND CAUSE FOR METAL DUE TO INNER RACE GALLING ON T/M JOURNAL BEARING, CAUSING METAL CONTAMINATION THROUGHOUT GEARBOX.
- [SDR ALG2001F00018](https://openairdocs.org/sdr/ALG2001F00018.md): Bearing · damaged · Sep 10, 2001 · N577AL · Bell 407 · Tail Rotor Drive Shaft
  > TAILROTOR DRIVESHAFT BEARINGS, DURING DAILY INSPECTION, GREY GREASE FROM BEARINGS.
- [SDR 20010314CW002](https://openairdocs.org/sdr/20010314CW002.md): Housing · cracked · Feb 17, 2001 · N577AL · Bell 407 · Tail Rotor Drive Shaft
  > FOUND DURING ROUTINE MAINTENANCE. BLOWER HOUSING HAD CRACKED.
- [SDR 20001025SH016](https://openairdocs.org/sdr/20001025SH016.md): Disc Pack · cracked · Sep 5, 2000 · N577AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING 25-HOUR AD INSPECTION, FOUND FORWARD SEGMENT CRACKED ACROSS THE SPAN. (X)
- [SDR 20001025SH018](https://openairdocs.org/sdr/20001025SH018.md): Bearing · failed · Jul 17, 2000 · N577AL · Bell 407 · Tail Rotor Drive Shaft
  > ON FINAL APPROACH, PILOT FELT A GRINDING IN THE FLIGHT CONTROLS. POST-FLIGHT INSPECTION REVEALED FORWARD OIL COOLER BLOWER BEARING FAILURE. BEARING DISINTEGRATED (FAILED). (X)
- [SDR 20000807SH002](https://openairdocs.org/sdr/20000807SH002.md): Bearing · failed · Jul 17, 2000 · N577AL · Bell 407 · Rotorcraft Cooling Fan System
  > ON FINAL APPROACH, PILOT FELT A GRINDING IN THE FLIGHT CONTROLS. POST-FLIGHT INSPECTION REVEALED FORWARD OIL COOLER BLOWER BEARING FAILURE. BEARING DISINTEGRATED (FAILED). (X)
- [SDR 20000807SH001](https://openairdocs.org/sdr/20000807SH001.md): Hanger Assy · damaged · Jul 17, 2000 · N577AL · Bell 407 · Rotorcraft Cooling Fan System
  > ON FINAL APPROACH, PILOT FELT A GRINDING IN THE FLIGHT CONTROLS. POST-FLIGHT INSPECTION REVEALED FORWARD OIL COOLER BLOWER BEARING FAILURE. FORWARD BEARING DISINTEGRATED (FAILED) IN THE HANGER AND THE HANGER WAS DAMAGED. (X)
- [SDR 20000804SH025](https://openairdocs.org/sdr/20000804SH025.md): Shaft · failed · Jul 17, 2000 · N577AL · Bell 407 · Rotorcraft Cooling Fan System
  > ON FINAL APPROACH, PILOT FELT A GRINDING IN THE FLIGHT CONTROLS. POST-FLIGHT INSPECTION REVEALED FORWARD OIL COOLER BLOWER BEARING FAILURE. FORWARD BEARING DISINTEGRATED (FAILED) AND DAMAGED SHAFT. (X)
- [SDR 20000804SH024](https://openairdocs.org/sdr/20000804SH024.md): Disc Pack · cracked · Jul 12, 2000 · N577AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING 25-HOUR AD INSPECTION, FORWARD SEGMENT CRACKED ACROSS TWO SPANS. 180 DEGREES OPPOSITE EACH OTHER. (X)
- [SDR 20000718SH015](https://openairdocs.org/sdr/20000718SH015.md): Transmission · corroded · Jun 21, 2000 · N577AL · Bell 407 · Main Rotor Gearbox
  > AT DISASSEMBLY FOR TRANSMISSIONS FIRST OVERHAUL, FOUND CORROSION IN BORE OF MOUNTING SPLINDLE. CORROSION IN BORE OF CHIP DETECTOR ASSY. CORROSION ON INPUT FLANGE. (X)
- [SDR 20000412SH031](https://openairdocs.org/sdr/20000412SH031.md): Drive Shaft · vibration · Mar 1, 2000 · N577AL · Bell 407 · Tail Rotor Drive Shaft
  > DURING FLIGHT, A VIBRATION WAS NOTICED. FOUND A SECTION APPROXIMATELY 3 INCHES LONG HAD BROKEN OFF FROM ONE OF THE FLEX FRAMES. THE SECTION PUNCTURED THE ROOF PANEL AND NICKED THE FUEL VENT LINE. (X)
- [SDR 2000ZZZX803](https://openairdocs.org/sdr/2000ZZZX803.md): Support Bracket · cracked · Feb 23, 2000 · N577AL · Bell 407 · Rotorcraft Tail Boom
  > DURING DAILY INSPECTION, FOUND CRACK IN RADIUS.
- [SDR 99ZZZX3352](https://openairdocs.org/sdr/99ZZZX3352.md): Support · cracked · Jul 25, 1999 · N577AL · Bell 407 · Rotorcraft Tail Boom
  > CRACK IN RADIUS, POOR QUALITY CONTROL WHEN FABRICATING AND PART PUT IN LOAD ON INSTALLATION.
- [SDR 99ZZZX209](https://openairdocs.org/sdr/99ZZZX209.md): Support · cracked · Nov 25, 1998 · N577AL · Bell 407 · Horizontal Stabilizer Structure
  > DURING DAILY INSPECTION FOUND SLAT SUPPORT, P/N 206-023-119-110, (LEFT SIDE, 2ND FROM INBOARD) CRACKED. REMOVED AND REPLACED CRACKED SUPPORT.
- [SDR 98ZZZX3516](https://openairdocs.org/sdr/98ZZZX3516.md): Bolt · loose · Aug 6, 1998 · N577AL · Bell 407 · Vertical Stabilizer
  > ON DAILY SERVICE CHECK, 4 MOUNTING BOLTS FOR VERTICAL FIN WERE FOUND TO HAVE LOST TORQUE.
- [SDR 98ZZZX3515](https://openairdocs.org/sdr/98ZZZX3515.md): Bolt · loose · Aug 6, 1998 · N577AL · Bell 407 · Vertical Stabilizer
  > ON DAILY SERVICE CHECK, 4 MOUNTING BOLTS FOR VERTICAL FIN WERE FOUND TO HAVE 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 = 'N577AL' AND deregistration_id = 'N577AL-2019-05-15'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/deregistered/N577AL-2019-05-15/reports

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