N428MB
Registered owner: BETHUNE KENNETH, AL (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| Rocky Mountain Helicopters | Operator | on 2000-04-25 | Operator named in NTSB report |
Accident & incident history
Operated by ROCKY MOUNTAIN HELICOPTERS (per NTSB report)
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.
29 reports on file, 1995-03-23 – 1998-11-12.
Part: SEAL — WORN (TURBINE SHROUD)
SEAL WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: PT ROTOR — DAMAGED (TURBINE)
FAILED SB LT101-72-10-0153. EXCESSIVE IBPT BLADE SHIFT. REPLACED WITH USED UNIT, CORRECTED PROBLEM. PART TC: 5,451.2.
Part: SEAL — WORN (TURBINE SHROUD)
SEAL WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: SEAL — LEAKING (NR 2 BEARING)
SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: SEAL — LEAKING (NR 1 BEARING)
SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: SPRING — WORN (SEAL RING)
SPRING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: SEAL — LEAKING (NR 3 BEARING)
SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Earlier reports · 1995–1997 · 22 reports
1997
Part: SWITCH — FAILED (ENGINE START)
SWITCH UNIT OPERATES INTERMITTENTLY IN 'ON' POSITION. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
1995
Part: SEAL — LEAKING (ACC DRIVE)
SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: SEAL — LEAKING (ACC DRIVE)
SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: BEARING — DEFECTIVE (ENGINE)
BEARING DEFECTIVE. REMOVED TO FACILITATE OTHER MAINTENANCE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: SEAL — LEAKING (NR 2 BEARING)
NR 2 BEARING SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: SEAL — LEAKING (ACC DRIVE)
SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM.
Part: SEAL — LEAKING (NR 3 BEARING)
NR 3 BEARING SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: SEAL — LEAKING (ACC DRIVE)
SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: SEAL RING — WORN (1ST TURB SHROUD)
SEAL RING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM.
Part: BEARING — DEFECTIVE (NR 3)
BEARING DEFECTIVE. REMOVED TO FACILITATE OTHER MAINTENANCE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: SHROUD — BLADE TIP RUB (GAS PROD)
EXCESSIVE GP BLADE TIP RUB. REPLACED WITH NEW SHROUD UNIT, CORRECTED PROBLEM.
Part: SEAL — LEAKING (NR 2 BEARING)
NR 2 BEARING SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WTIH NEW UNIT(S) CORRECTED PROBLEM.
Part: ROTOR ASSY — BLADE SHIFT (LT ENG TURB)
FAILED SB LT5101-72-10-0153. EXCESSIVE IBPT BLADE SHIFT NR 4, MINUS 0.011 INCH. REPLACED WITH NEW UNIT(S) CORRECTED PROBLEM. PART TOTAL CYCLES 3925.7.
Part: BELLOWS — TORN (MAST)
BELLOWS IS TORN AROUND CLAMP AND FOLD AREAS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: SEAL — LEAKING (NR 3 BEARING)
SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: SEAL — LEAKING (NR 2 BEARING)
SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
Part: ROTOR ASSY — BLADE SHIFT (RT ENG TURB)
FAILED SB LT101-72-10-0153. EXCESSIVE IBPT BLADE SHIFT NR 8, PLUS 0.016 INCH. REPLACED WITH USED UNIT, CORRECTED PROBLEM. PART TOTAL CYCLES 2967.6.
Part: SUPPLY UNIT — INOPERATIVE (FLASHER)
SUPPLY UNIT INOPERATIVE. REPLACED WITH NEW UNIT(S), CORRECTED PROBLEM.
Part: BEARING — WORN (T/R)
BEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT(S), CORRECTED PROBLEM.
Part: FITTED BOLT — WORN (T/R)
FITTED BOLT WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT(S), CORRECTED PROBLEM.
Part: BEARING — WORN (T/R)
BEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNIT(S) CORRECTED PROBLEM.
Part: LIGHT — WORN (TAIL)
TAIL LIGHT WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT(S) CORRECTED PROBLEM.