N171AL
Operators of this aircraft
Who operated this tail, and how firmly we know it.
No operator established for this aircraft.
Accident & incident history
No NTSB accidents or incidents on file for this aircraft.
Maintenance disclosures
Service Difficulty Reports filed with the FAA for this airframe. Filing is largely voluntary — the number of reports is not a measure of reliability. To verify a report, search its control number at the FAA SDRS site.
13 reports on file, 1995-06-27 – 2004-07-23.
Part: COMPRESSOR — STALLED (ENGINE)
AT 3500 AGL AND 74 PERCENT TORQUE AIRCRAFT COMPRESSOR STALLED, TORQUE FLUCTUATED AND RETURNED TO NORMAL, NOSE OF AIRCRAFT SWUNG 15 DEGREES TO THE LEFT. AIRCRAFT POWER REDUCED AND THEN RETURNED TO CRE BASE. MAINTENANCE REMOVED AND REPLACED ENGINE ASSEMBLY. (M)
Earlier reports · 1995–1999 · 12 reports
1999
Part: BLADE — CORRODED (MAIN ROTOR)
DISCOVERED DURING DAILY INSPECTION, HEAVY INTERGRANULAR CORROSION ON TRAILING EDGE.
1998
Part: BLADE — CORRODED (MAIN ROTOR)
DISCOVERED DURING DAILY INPSECTION, HEAVY CORROSION ALONG TRAILING EDGE (APPEARS TO BE INTERGRANNULAR CORROSION IN TRAILING EDGE EXTRUSION).
1996
Part: LEVER ASSY — WORN (PYLON)
DAILY INSPECTION FOUND BEARINGS AND SPACERS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-001 SPACERS, 4 EACH 206-010-337-001 BEARINGS, 2 EACH NAS6605D64 BOLTS. NORMAL USE CAUSES PARTS TO WEAR OUT TOO SOON. WORN PARTS TT 293.1 HOURS.
Part: BEARING — GROOVED (FREEWHEEL)
AT 3,000-HOUR OVERHAUL, BEARING ROLLER FOUND TO HAVE DEEP GROOVE ON ONE ROLLER, SCRAPPED BEARING.
Part: BEARING — PITTED (MAST)
FOUND AT 3,000-HOUR OVERHAUL, MAST BEARING OUTER RACE THRUST AREA HAS PITTED AREA - SCRAPPED BEARING.
1995
Part: LEVER ASSY — WORN (PYLON)
DURING DAILY INSPECTION, FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-001 SPACERS, 4 EACH 206-010-337-001 BEARINGS, 2 EACH 206-010-338-003 BUSHINGS, 2 EACH NAS6605D64 BOLTS, 1 EACH 206-010-470-101 BEARING. SUBMITTER STATED NORMAL USE CAUSES PARTS TO WEAR OUT TOO SOON. WORN PARTS TT, 645.0 HOURS.
Part: LINK IDLER — WORN (PYLON)
DURING DAILY INSPECTION, FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-001 SPACERS, 4 EACH 206-010-337-001 BEARINGS, 2 EACH 206-010-338-003 BUSHINGS, 2 EACH NAS6605D64 BOLTS, 1 EACH 206-010-470-101 BEARING. SUBMITTER STATED NORMAL USE CAUSES PARTS TO WEAR OUT TOO SOON. WORN PARTS TT, 645.0 HOURS.
Part: PUMP — WORN (DRIVE)
DURING A GROUND RUN, HYDRAULICS WOULD NOT COME ON LINE. DURING TROUBLESHOOTING, FOUND THE SPLINES ON HYDRAULIC PUMP WERE WORN. HYDRAULIC PUMP AND MAIN ROTOR TACH GENERATOR WERE REPLACED. THE PUMP IS MOUNTED ON THE TACH GENERATOR AND DRIVEN BY SAME. THE SPLINES ON THE TACH GENERATOR WERE WORN ALSO.
Part: BLADE — DEBONDED (M/R)
DAILY INSPECTION FOUND OUTBOARD SKIN AT TIP OF BLADE DEBONDED (TOP SIDE). PART DEBONDED BEYOND REPAIR.
Part: FITTING — CRACKED (FWD CROSS-TUBE)
WHILE PERFORMING DAILY SERVICE CHECK, NOTED CROSS-TUBE FITTING WAS CRACKED. FITTING WAS FOUND CRACKED IN THE SAME MANNER AS REPORTED ON MDR'S SUBMITTED ON 5-8-95 AND ON 2-7-94 AND EARLIER REPORTED CRACKED FITTINGS.
Part: LINK IDLER — WORN (PYLON)
DAILY INSPECTION FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH, 206-010-338-001, SPACERS, 4 EACH, 206-010-337-001, BEARINGS, 2 EACH, 206-010-338-003, BUSHINGS, 2 EACH, NAS6605D64, BOLTS, 1 EACH, 206-010-470-101, BEARING. NORMAL USE CAUSES PARTS TO WEAR OUT TOO SOON. WORN PARTS TT 512.4.
Part: LEVER ASSY — WORN (PYLON)
DAILY INSPECTION FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH, 206-010-338-001, SPACERS, 4 EACH, 206-010-337-001, BEARINGS, 2 EACH, 206-010-338-003, BUSHINGS, 2 EACH, NAS6605D64, BOLTS, 1 EACH, 206-010-470-101, BEARING. NORMAL USE CAUSES PARTS TO WEAR OUT TOO SOON. WORN PARTS TT 512.4.