the pilot's inadequate preflight planning which resulted in a low fuel state, and his inability to see the wire which the helicopter contacted. Factors associated to the accident were the precautionary landing, the dark night conditions, and the wire which was contacted.
These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.
Schweizer Aircraft Corporation Model 269A, 269A-1, 269B, 269C, and TH-55A Helicopters
May 8, 2002
Airframe (269C)Only with: With tailboom support strut assemblies P/N 269A2015 or 269A2015-5, tailboom center attach fitting P/N 269A2324, or center frame aft cluster fitting P/N 269A2234 or 269A2235 installed.
DURING PRE-TAKEOFF RUNUP, ENGINE STARTED VIBRATING AT MID-RPM RANGE AND WOULD NOT ACCELERATE. FOUND NR 3 AND NR 4 EXHAUST VALVES STICKING. REAMED GUIDES TO PROPER DIMENSION. ENGINE HAS 107.6 HOURS SINCE FACTORY OVERHAUL. THIS OPERATOR HAS HAD NUMEROUS LOW TIME ENGINES WITH THIS PROBLEM. AIRCRAFT…
From FAA Service Difficulty Reports; matched by N-number and serial number.
Engine oil · valve · nut looseJan 26, 1995
INSPECTED VALVE PER LYCOMING SB 518 AND FOUND NUT TO BE LOOSE. NUT SWAGE DIMENSION IS .215 INCH. (ORDERED NEW VALVE.) SB DATED 11-4-94. RECEIVED SB 1-24-95.
From FAA Service Difficulty Reports; matched by N-number and serial number.