N1704U
Registered owner: KUSPUK SCHOOL DISTRICT, AK (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| Flight Alaska | Operator | 2013-03-06 – 2013-03-06 | Operator named in NTSB report |
Accident & incident history
Maintenance disclosures
DURING 100HR INSPECTION BORESCOPING ENG, FOUND NR 2 CYLINDER CRACKED FROM LOWER SPARK PLUG BOSS PROCEEDING TOWARDS EXHAUST VLV. CRACK WAS APPROX 1/2 INCH LONG.
DURING 100HR INSPECTION BORESCOPING ENG, FOUND NR 5 CYLINDER CRACKED FROM LOWER SPARK PLUG BOSS PROCEEDING TO CYLINDER TO EXHAUST VLV. CRACK WAS 1/2 INCH LONG.
NUMBER 1 PISTON WAS FRACTURED AT THE PISTON PIN BORE, RELEASING THE NR 1 ROD AND PISTON PIN ASSY AT THE SMALL END. THE UNSUPPORTED NR 1 ROD AND PISTON ASSY CAUSED EXTREME MECHANICAL DAMAGE TO THE REAR SECTION OF THE CRANKCASE AND CAMSHAFT.
FAILURE OF CAMSHAFT AT NR 3 AND NR 4 INTAKE LOBE. DESTROYED LIFTER BODIES, METAL IN ENGINE, ETC. TIME SINCE OVERHAUL 486.1 HOURS.