Pacific Missionary Aviation

Operated by PACIFIC MISSION AVIATION (per NTSB report)

The pilot's selection of an unsuitable takeoff area, resulting in a loss of directional control. Contributing to the accident was a flooded runway.

Operated by PACIFIC MISSIONARY AVIATION (per NTSB report)

Part: BLEED VALVE — STUCK (LT ENGINE) · airframe 19,022 hrs · 19,023 cycles

RIGHT AFTER LIFTOFF, THERE WAS A LOUD POPPING SOUND COMING FROM THE LEFT ENGINE WITH FLAMES EMITTING FROM THE EXHAUST. COMMENCED A PRECAUTIONARY ENGINE SHUTDOWN, FEATHERED THE PROPELLER AND RETURNED TO THE FIELD FOR A SINGLE ENGINE LANDING. TAXIED BACK TO THE BLOCK.

Part: ALTERNATOR — DEFECTIVE (RT ENGINE)

DURING RUNUP, THE RT VOLT/AMP METER SHOWED ONLY BATTERY VOLTAGE WHICH INDICATED A PROBLEM WITH THE RT ALTERNATOR. AFTER FURTHER TESTING AND INSPECTION, IT WAS DETERMINED THAT THE ALTERNATOR WAS DEFECTIVE. REPLACED WITH NEW ALTERNATOR AND PROBLEM WAS SOLVED.

Part: ACTUATOR — MALFUNCTIONED (RT MLG)

THE RT MLG FREEFELL TO THE DOWN AND LOCKED POSITION WHILE THE GEAR WAS BEING EXTENDED. INSP REVEALED FAILURE OF THE NUT INSIDE ASSY NR 50-8103672. REPLACED BOTH RT AND LT MAIN GEAR ACTUATORS.

Part: FORK — CRACKED (NOSE GEAR)

DURING A RECURRENT INSP REQUIRED BY AD 2004-23-02C, A CRACK WAS FOUND AT THE LOCATION ILLUSTRATED. WERE THE WELD MEETS THE SURFACE, AFTER USING DYE PENETRANT THE CRACK BECAME VISIBLE.

Part: STARTER — NOISY (ENGINE)

ON STARTUP, ONCE THE BENDIX GEAR ENGAGED, A LOUD NOISE WAS HEARD, WHICH SOUNDED LIKE GEARS GRINDING. UPON CLOSER INSP, NO TEETH REMAINED ATTACHED TO THE BENDIX. THE HAD ALL SHEARED OFF THE CASING AND THE CASING WAS LOOSE. THE SNAP RING WHICH NORMALLY HELD IT DOWN AT THE BACK, WAS OFF ALSO. (K)

Part: STARTER — INTERMITTENT (ENGINE)

PART REMOVED FOR OVERHAUL AFTER INTERMITTENT OPERATION. (K)

Part: HINGE — CRACKED (CABIN DOOR)

(2) OF THE HINGE LINKS HAD CRACKED OFF ON ONE END. UPON DISASSEMBLY IT WAS DETERMINED THAT A CRACK HAD FORMED LENGTHWISE BETWEEN THE FASTENERS AND THE HINGE LINKS. POSSIBLE CAUSE MAY HAVE BEEN FATIGUE. (K)

Part: BELLCRANK — CRACKED (RT ELEVATOR)

A CRACK WAS FOUND ON THE RT BELLCRANK SUPPORT ASSY. DURING A MANDITORY 5 YEAR INSPECTION IAW MSB 2231 REV 1. (K)

Part: CAMSHAFT — WORN (ENGINE)

SMALL PARTICLES OF METAL FOUND IN OIL. IDENTIFIED NR 5 AND NR 6 CAM AND ASSOCIATED LIFTERS WORN. REMOVED FOR REPAIR. RECOMMEND THE USE OF 16702 ENGINE OIL ADDITIVE ON A REGULAR BASIS. (K)

Part: SHAFT — SHEARED (DRY AIR PUMP)

PUMP FAILED UNDER NORMAL OPERATING CONDITIONS (VFR, DAY).

Part: CAMSHAFT — WORN (ENGINE)

SMALL METAL FLAKES KEPT RE-APPEARING IN THE OIL SCREENS. FOUND WORN CAM NR 5 AND NR 6 CYLINDER INTAKE VALVES. ENGINES REMOVED FOR REPAIR. USE MFG ENGINE OIL ADDITIVE FROM TIME OF OVERHAUL. RUN ENGINES FREQUENTLY. (K)

Part: LIFTER — WORN (ENGINE)

SMALL METAL FLAKES KEPT RE-APPEARING IN THE OIL SCREENS. FOUND WORN CAM NR 5 AND NR 6 CYLINDER INTAKE VALVES. ENGINES REMOVED FOR REPAIR. USE MFG ENGINE OIL ADDITIVE FROM TIME OF OVERHAUL. RUN ENGINE FREQUENTLY. (K)

Part: PUMP — FAILED (RT ENGINE)

PUMP FAILED UNDER NORMAL OPERATING CONDITIONS. (VFR, DAY) (K)

Part: PUMP — FAILED (LT ENGINE VACUUM)

VACUUM PUMP FAILED UNDER NORMAL OPERATING CONDITIONS. (VFR DAY)

Part: PUMP — FAILED (RT ENGINE VACUUM)

PUMP FAILED UNDER NORMAL OPERATING CONDITIONS (VFR DAY).

Part: PUMP — FAILED (RT VACUUM SYS)

VACUUM PUMP FAILED UNDER NORMAL OPERATING CONDITIONS.

Part: PUMP — FAILED (LT ENGINE VACUUM)

PUMP FAILED UNDER NORMAL OPERATING CONDITIONS.

Part: PUMP — FAILED (VACUUM SYSTEM)

VACUUM PUMP, PUMP FAILED UNDER NORMAL OPERATING CONDITIONS.

Part: MAGNETO — DAMAGED (ENGINE)

PRIMARY COIN HOLD DOWN RETAINERS LOOSE WITHIN MAGNETO CASE. THE LOOSE RETAINERS, IN TURN, GOT CAUGHT IN THE TIMING WHEEL/GEAR AND CHEWED UP SEVERAL TEETH. PROBABLE CAUSE- THE RETAINERS WERE NOT INSTALLED PROPERLY. FORTUNATELY THE DAMAGE WAS AT THE R20 TIMING MARK, WHERE WE WERE ABLE TO SEE THE DAMAGE DURING A 10 HOUR (ENGINE BREAK IN) VISUAL INSPECTION.

Part: PUMP — FAILED (LT ENG VACUUM)

VACUUM PUMP FAILED DURING FLIGHT TRAINING OPERATIONS. WHEN MAXIMUM TAKEOFF POWER WAS USED.

Part: PUMP — FAILED (LT ENG VAC)

VACUUM PUMP FAILED UNDER NORMAL OPERATING CONDITIONS. SUBMITTER STATED THIS PUMP HAD AN EXCEPTIONALLY LONG SERVICE LIFE.