N21240

Part: GYRO — PRECESSES (COCKPIT)

GYRO PRECESSES 45 DEGREES THEN LOCKS UP.

Part: GYRO — PRECESSING (COCKPIT)

HORIZONTAL GYRO INDICATES DOWN TO THE LEFT AND PRECESSES.

Part: GYRO — PRECESSING (COCKPIT)

ATTITUDE GYRO PRECESSES AND HAS EXCESSIVE BAR DROP IN RIGHT TURN.

Part: IGNITER BOX — FAILED (ENGINE IGNITION)

ENGINE DELAYED STARTS, WEAK IGNITERS.

Part: INDICATOR — INTERMITTENT (COCKPIT)

EXH TEMP INTERMITTENTLY READS UP TO 200 DEGREES LOW.

Part: INDICATOR — FAILED (ENG TOT)

TOT DOES NOT INDICATE WITH POWER APPLIED.

Part: INDICATOR — STICKS (COCKPIT)

VSI NEEDLE STICKS AROUND 500 FEET GOING UP.

Part: ALTIMETER — MALFUNCTION (COCKPIT)

ALTIMETER HAS EXCESSIVE FRICTION ERROR AND CORRODED ON HOUSING.

Part: ALTIMETER — LEAKING (COCKPIT)

ALTIMETER HAS EXCESSIVE CASE LEAKAGE AND FRICTION ERROR.

Part: INDICATOR — LEAKING (COCKPIT)

AIR SPEED INDICATOR LEAKING.

Part: BARO ANEROID — LEAK (COCKPIT)

BAROMETRIC ANEROID EXCESSIVE CASE LEAKAGE.

Part: FUEL CELL — SEEPAGE (FUEL SYS)

FUEL CELL SEEPAGE.

Part: CYLINDER — LEAKING (M/R SERVO)

SERVO LEAKING FROM PISTON ROD END CAP.

Part: CYLINDER — LEAKING (M/R)

LEAKING FROM PISTON ROD END CAP.

Part: FUEL CELL — BLISTERED (FUEL SYS)

FUEL CELL BLISTERS.

Part: ENCODER — DEFECTIVE (ALTIMETER)

ENCODER CAN'T CALIBRATE AND UPGRADE TO MOD 3 STATUS.

Part: VOLT REGULATOR — WRONG PARTS (DC SYS)

REGULATOR NEEDS EVALUATION FOR CORRECT CIRCUIT BOARDS.

Part: LORAN — DEFECTIVE (COCKPIT SCREEN)

LORAN SCREEN LIGHT IS DIM WITH BRIGHTNESS KNOB AT MAXIMUM.

Part: TRANSCEIVER — DISPLAY INOP (COCKPIT VHF)

DISPLAY DOES NOT FUNCTION WHEN IT IS DARK. REPLACED DS101 DISPLAY, REPAIRED. ADJUSTED FREQUENCY, C/W SQUELCH AND SIDETONE. BENCH CHECK GOOD.

Part: WHEEL — BLADE DAMAGE (3RD STAGE)

ENGINE REMOVED DUE TO LOUD GRINDING NOISE, HIGH PITCH SQUEAL ACCOMPANIED BY TORQUE FLUCTUATIONS. UPON INSPECTION OF TURBINE PARTS NOTED THE FOLLOWING: RIM BREAKOUT OF 1 1/2" AND 1/4" OF TWO EACH BLADES ON 3RD STAGE WHEEL. SUSPECT CAUSE OF FAILURE TO BE A STRESS CRACK ORIGINATING ON THE LEADING EDGE SIDE OF BREAKOUT IN REFERENCE TO DIRECTION OF ROTATION, ON THE TRAILING EDGE OF RIM SHROUD AND PROGRESSED APPROXIMATELY 1/2 OF CHORDAL LENGTH UNTIL OVERLOAD. SECONDARY DAMAGE - P.T.SECTION EXHIBITS EXCESSIVE KNIFE AND SEAL CONTACT AND BEARING AREA DAMAGE.

Part: WHEEL — RIM BREAK OUT (TURB 3RD STGE)

LOUD GRINDING, HIGH PITCH SQUEAL ACCOMPANIED BY TORQUE FLUCTUATIONS. TEAR DOWN INSPECTION REVEALED 3RD STAGE WHEEL EXHIBITED RIM BREAK OUT OF 1.50 INCHES AND .25 INCH OF 2 EACH BLADES. SUSPECT CAUSE OF FAILURE TO BE A STRESS CRACK ORIGINATING ON THE LEADING EDGE SIDE OF BREAK OUT IN REFERENCE TO DIRECTION OF ROTATION, ON THE TRAILING EDGE OF RIM SHROUD AND PROGRESSED APPROXIMATELY ONE-HALF OF CHORDAL LENGTH UNTIL OVERLOAD. POWER TURBINE SECTION EXHIBITS EXCESSIVE KNIFE AND SEAL CONTACT AND BEARING AREA DAMAGE. TOTAL CYCLES 980.

Part: BEARING — CRACKED (T/R)

INBOARD OUTBOARD BEARINGS CRACKED. REMOVED FROM T/R HUB S/N AFS6082, T.T. 1453:05. ALSO REMOVED 4 EACH SLEEVES P/N 206-010-733-003. PARTS SCRAPPED LOCALLY.

Part: RECEIVER — DEFECTIVE (COCKPIT)

SOME LED SEGMENTS DON'T DISPLAY. REPLACED DISPLAY. REPAIRED. FOUND LOWER DOT ON COLON ON STANDBY SIDE VERY BRIGHT AND DOES NOT DISAPPEAR WHEN TRANSFERRING FREQUENCIES. REPLACED INTEGRATED CIRCUIT I507. REPAIRED. INSPECTED FOR CORROSION. BENCH CHECK GOOD.

Part: ACTUATOR — INTERMITTENT (ENGINE)

INTERMITTENT OPERATION. INSPECTED BY ACCESSORY OVERHAUL SHOP AND FOUND WATER IN UNIT. CLEANED AND REPLACED O-RINGS. ASSEMBLED, TESTED AND RETURNED LINEAR ACTUATOR TO SERVICE.