N2277A
Registered owner: MOUNTAIN HELICOPTERS LLC, UT (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
No operator established for this aircraft.
Accident & incident history
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.
22 reports on file, 1995-02-14 – 2001-08-21.
Part: BLADE — CORRODED (MAIN ROTOR) · airframe 18,235 hrs
EXTREME TRAILING EDGE SPAR CORRODED AT THE TIP OF THE BLADE.
Part: TRANSCEIVER — MALFUNCTIONED (VHF SYSTEM) · airframe 17,861 hrs
RADIO TOTALLY INOPERATIVE. WON''''T TURN ON. PERFORMED PRELIMINARY INSPECTION AND TESTED. COULD NOT DUPLICATE PROBLEM. ADJUSTED SIDETONE. REPLACED FADED DISPLAY LENS. BENCH CHECK GOOD.
Earlier reports · 1995–1999 · 20 reports
1999
Part: STARTER — DAMAGED (STARTER/GEN)
STARTER VIBRATED SCREWS LOOSE ON FAN SHROUD AND SHAFT NUT LOOSE TWO TIMES. INSPECTED BY ACCESSORY SHOP AND FOUND NUT WAS LOOSE CAUSING SHAFT TO WEAR FAN, DRIVESHAFT, AND ARMATURE SPLINES. ALSO CAUSED CLUTCH DAMPNER HUB, PLATE AND FRICTION RING TO WEAR.
Part: ACTUATOR — INOPERATIVE (MAIN ROTOR)
ACTUATOR WILL NOT ACTUATE.
Part: REGULATOR — FAILED (DC SYSTEM)
REGULATOR INOPERATIVE.
1998
Part: TRANSCEIVER — FAILED (COCKPIT)
NO POWER INDICATED. SMELLED BURNT. PERFORMED PRELIMINARY INSPECTION. FOUND OPEN FUSE, SHORTED TRANSISTOR Q507 AND BURN SPOT ON DISPLAY BOARD.
1997
Part: INDICATOR — FAILED (ENG OIL)
INDICATOR WAS REMOVED FROM BOWL AND CLEANED. INSTALLED INDICATOR BACK ON BOWL, TESTED AND INDICATOR STILL DID NOT WORK. SCRAPPED INDICATOR AND REPLACED WITH SERVICEABLE PART.
Part: ACTUATOR — STRIPPED (INSERT)
ACTUATOR INSERT FOR COVER WIRES STRIPPED.
Part: INDICATOR — DEFECTIVE (TOT)
TOT INDICATOR LIGHT IS INTERMITTENT AND OIL BEHIND GLASS.
Part: FUEL CELL — LEAKS (FUEL SYS)
FUEL CELL HAS TWO LEAKS.
Part: TRANSCEIVER — FAILED (COCKPIT ATC)
AFTER UNIT HEATS UP, RECEIVER SENSE DECREASES. PERFORMED PRELIMINARY INSPECTION, FOUND AFTER UNIT HEATS UP AND IS TURNED OFF AND BACK ON UNIT RECEIVER BUT NO TRANSMIT. TROUBLESHOT AND REPLACED TRANSISTOR Q417, Q418, Q419, REPLACED R472 VARIABLE RESISTOR, REPAIRED. HEATED AND VIBRATED UNIT,BENCH CHECK GOOD.
Part: FUEL CELL — SEEPAGE (FUEL CELL)
FUEL CELL EXCESSIVE FUEL SEEPAGE.
Part: SKIN — MIS IDENT (FUSELAGE)
MISIDENTIFIED. SKIN RECEIVED WITH THE WRONG PART NUMBER STAMPED ON IT. THE NUMBER IS FOR A R/H SKIN AND THE SKIN IS FOR THE L/H SIDE OF THE AIRCRAFT.
Part: BRACKET — CORRODED (FLOAT BOTTLE)
FLOAT BOTTLE CORRODED BEYOND REPAIR AT MOUNTING AREA. BRACKET REMOVED FROM SERVICE AND REPLACED WITH SERVICEABLE BRACKET.
Part: VERTICAL FIN — DEFECTIVE (STINGER)
VERT FIN STINGER IS NOT BONDED.
1996
Part: TRANSCEIVER — WEAK (COCKPIT ATC)
NO RECEPTION BY TOWER. REPLACED WEAK V101 CAVITY OSCILLATOR. ADJUSTED FREQUENCY. BENCH CHECK GOOD.
1995
Part: YOKE — CORRODED (M/R)
FOUND GREASE WATERY & BLACK COLORED. O/B BEARING JOURNAL BREAKING DOWN, EXCESSIVE CORROSION IN RETAINER BORES, AND SURFACE CORROSION ON YOKE BETWEEN JOURNALS. SCRAPPED YOKE LOCALLY.
Part: TRANSCEIVER — INOPERATIVE (COCKPIT ATC)
INOPERATIVE. NO OUTPUT. REPLACED WEAK V101 CAVITY OSCILLATOR AND INOPERATIVE. V301 PHOTODETECTOR. INSTALLED Q415 HEAT SINK ACCORDING TO KT76A MOD 6. ADJUSTED AS NEEDED. BENCH CHECK GOOD.
Part: SEAL ASSY — LEAKING (M/R GR BOX)
SEAL LEAKING. ALSO REPLACED HOUSING P/N 206-040-052-009 AND ADAPTER P/N 206-040-048-003 AS AN ASSEMBLY. SEE MMIR'S #4542 AND #4544 FOR OTHER PARTS REPLACED.
Part: ADAPTER — SEAL LEAKING (M/R GR BOX)
SEAL LEAKING. ALSO REPLACED HOUSING P/N 206-040-052-009 AND SEAL P/N 206-040-156-101 AS AN ASSEMBLY. SEE MMIR'S #4542 AND #4543 FOR OTHER PARTS REPLACED.
Part: HOUSING — SEAL LEAKING (MAIN GR BOX)
SEAL LEAKING. ALSO REPLACED SEAL P/N 206-040-156-101 AND ADAPTER P/N 206-040-048-003 AS AN ASSEMBLY. SEE MMIR'S #4543 AND #4544 FOR OTHER PARTS REPLACED.
Part: FIN — SEPARATED (VERT FIN)
SEPARATED AT STINGER AND FIN OVERWEIGHT 17.1 LBS.