N2772A
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| PETROLEUM HELI | Operator | on 1991-06-30 | Operator named in NTSB report |
Accident & incident history
Operated by PETROLEUM HELICOPTERS, INC. (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.
23 reports on file, 1995-07-28 – 1999-11-11.
Part: INDICATOR — FAILED (COCKPIT)
ALTIMETER INDICATES 3,000-4,000 FEET.
Part: CYLINDER — LEAKING (CYCLIC)
CYLINDER LEAKING.
Part: CYLINDER — LEAKING (CYCLIC)
CYLINDER LEAKING.
Part: INDICATOR — BROKEN (RADIO ALTIMETER)
BROKEN AND BENT GEARS, CAUSING IT HARD TO TURN SHAFT.
Part: TRANSMITTER — MALFUNCTIONED (ELT)
ELT UNIT ON WHEN SWITCHED TO ARM. TIME SINCE REPAIR 0:00 HOURS.
Part: RADAR ALTIMETER — FAILED (COCKPIT)
RADAR ALTIMETER POWER OUT BELOW 25 MILLIWATTS.
Part: FCU — LEAKING (ENGINE)
FUEL CONTROL LEAKING OUT START DERICH SHAFT AND BYPASS COVER. PERFORMED PRELIMINARY INSPECTION. TEST START DERICH FUNCTION AND FOUND NO LEAKAGE FROM THE SHAFT. BENCH TEST AND FOUND NO LEAKAGE FROM BYPASS COVER OR START DERICH WHEN TESTED ON THE FLOW BENCH. COULD NOT DUPLICATE PROBLEM AS STATED.
Part: INDICATOR — FAILED (TOT)
TOT INDICATOR HAD NO INDICATION.
Part: TRANSCEIVER — ERRATIC (COCKPIT)
RADAR ALTIMETER OFF 300 FEET AND ERRATIC.
Earlier reports · 1995–1998 · 14 reports
1998
Part: GYRO — PRECESSING (COCKPIT)
DIRECTIONAL GYRO PRECESSES EXCESSIVELY IN UNSLAVE MODE.
Part: ALTIMETER — MALFUCNTIONED (COCKPIT)
NO LIGHT WITH ALTIMETER.
Part: CARBON SEAL — WORN (ENG COMP)
ENGINE REMOVED DUE TO CRACKED SCROLL. INSPECTION OF COMPRESSOR PARTS REVEALED: WORN BEYOND SERVICEABLE LIMITS ON SEAL TANGS AND TANG SLOTS. INSTALLED A NEW SEAL.
1997
Part: ACTUATOR — DEFECTIVE (M/R)
DROOP COMP DEFECT, UNABLE TO ADJUST SPREAD TO 3%. GOV WAS CHANGED AT THE SAME TIME WITH RATCHETING ARM.
Part: RADAR ALTIMETER — READS LOW (COCKPIT)
READS 300 FEET LOW AT 800 FEET. FOUND UNIT TO HAVE NO ANALOG ALTITUDE OUTPUT VOLTAGE. REPLACED INTEGRATED CIRCUITS I501, I529 AND CAPACITOR C513. REPAIRED PROBLEM. ALIGNED AND CALIBRATED UNIT. INSTALLED MOD VOLTAGE DECAL. BENCH CHECK GOOD.
Part: ELT — MALFUNCTION (COCKPIT)
ELT CAME ON AT EVERY LANDING.
Part: TRANSCEIVER — DEFECTIVE (COCKPIT ATC)
TRANSPONDER IDENT LIGHT DOES NOT ILLUMINATE. PERFORMED MOD 6 INSTALLING HEAT SINK ON Q415 TRANSISTOR AND REPLACED RM401 AND RM402 RESISTOR NETWORK TO COMPLY WITH MOD 7. ADJUSTED FREQUENCY. BENCH CHECK GOOD.
1996
Part: NOZZLE — EXCESS RUNOUT (ENGINE)
DISASSEMBLED TURBINE DUE TO N1 TIP DRAG ON TEST CELL. UPON INSPECTION OF TURBINE PARTS NOTED: EXCESSIVE RUNOUT .007 BEYOND SERVICEABLE LIMITS ON #2 NOZZLE #1 AND #2 TIP PATHS. INSTALLED A DALLAS AIRMOTIVE OVERHAULED #2 NOZZLE.
Part: HANGER ASSY — OUT OF LIMITS (T/R DRIVE)
REMOVED PER ASB 206L-95-101 REV. A. (SPRING I.D. OUT OF LIMITS)
1995
Part: INDICATOR — STICKS (COCKPIT)
NEEDLE STICKS, BROKEN GLASS.
Part: O-RING — FAULTY (M/R XMSN)
THESE "NEW DESIGN" ORINGS FOLD OVER UPON INSTALLATION OF INPUT FLANGE CAUSING EXCESSIVE LEAKING. REPLACED "NEW DESIGN" (THINNER) ORINGS WITH "OLD DESIGN" (THICKER) ORINGS AND RETURNED TO SERVICE.
Part: CELL — DEFECTIVE (DC SYS)
LOW VOLTAGE. INSPECTED BY ACCESSORY SHOP AND FOUND BATTERY CELL #17 WILL NOT TAKE A CHARGE. CELL REPLACED WITH ONE GIVEN ON CONSIGNMENT.
Part: REGULATOR — DEFECTIVE (DC SYS)
GENERATOR KICKS OFF LINE.
Part: BEARING — CRACKED (T/R)
INBOARD AND OUTBOARD BEARINGS CRACKED. REMOVED FROM T/R HUB S/N AFS5784, T.T. 2090:15. ALSO REMOVED 4 EACH SLEEVES 206-010-733-003. PARTS SCRAPPED LOCALLY.