N298EH

Part: FLOAT — LEAKING (LT MLG) · airframe 7,172 hrs

CYLINDER BOTTLE LEAKING DOWN PRESSURE. SQUIB VALVE ON CYLINDER WAS CHECKED FOR LEAKS, LEAK WAS DISCOVERED AT SQUIB VALVE TO MANIFOLD JUNCTION. ACTION TAKEN: REMOVED SQUIB VALVE MANIFOLD ASSY FROM CYLINDER. REMOVED AND REPLACED O RING AND LEATHER BACK UP RING SEALING THE MANIFOLD TO THE SQUIB VALVE. RE-INSTALLED SQUIB VALVE ASSY TO THE CYLINDER AND RE PRESURIZED CYLINDER WITH NITROGEN. NO LEAKS DETECTED. CYLINDER RE INSTALLED ONTO FLOAT.

Part: BEVEL GEAR — DETERIORATED (TRANSMISSION) · airframe 7,131 hrs

TRANSMISSION MAKING METAL. LT INPUT PINION AND BEVEL GEAR BREAKING DOWN, LT INPUT SEAL LEAKING. REMOVED AND SCRAPPED LT PINION AND BEVEL GEAR. INSTALLED SERVICEABLE LT INPUT PINION AND BEVEL GEAR, CLEANED AND INSPECTED ALL CENTER CASE AND LOWER CASE PARTS. ADJUSTED DISTANCE AND BACKLASH AS REQUIRED. REASSEMBLED IAW REM 103. REPLACED LT AND RT INPUT SEAL, COMPLIED WITH LT AND RT FREEWHEEL INSPECTION IAW REM 103.

Part: ROTOR HEAD — WORN (TAIL ROTOR) · airframe 10,895 hrs

TAIL ROTOR ASSY WILL NOT BALANCE, PLAY IN FEATHERING BEARINGS. BOTH TAIL ROTOR BLADES ERODED ON HEADING EDGE, GRIP BUSHINGS WORN. ACTION TAKEN: DISASSEMBLED, CLEANED AND INSPECTED PARTS. INSTALLED NEW INNER SLEEVE BUSHINGS, NEW GRIP BUSHINGS, SEALS, SERVICEABLE BLADES, NEW NUTS AND WASHERS. REASSEMBLED AND BALANCED IAW BO-105 M;M CHAPTER 33 & 107 AND REM 301. C/W TABLE 101-10-1 SUPPLEMENTARY INSPECTION 300 HOUR AND 2400 HR INSPECTION. C/W BY AEC.

Part: GOVERNOR — FAILED (ENGINE) · airframe 6,867 hrs

ENGINE GETS 100 PERCENT N1 BUT FALLS OFF WHEN PULLING PITCH. DROPS EARLY / OUT OF SERVICE LIMITS. HAS STIFF THROTTLE SHAFT, CORRODED, UNDER SIZE ECCENTRIC SHAFT. REPAIRED AND TESTED IAW HONEWELL OHM FORM 15-1095A.

Part: BLEED VALVE — STALLED (COMPRESSOR) · airframe 6,118 hrs

BLEED VALVE PRODUCING COMPRESSOR STALLS. OVERHAULED BLEED VALVE; CHANGED ALL NECESSARY PARTS AS LISTED ON WORK FORM.

Part: FLOAT — LEAKING (MLG) · airframe 6,256 hrs

FLOAT BAG LEAKS. FLOAT WAS REPAIRED AND C/W ON INSPECTION. TEST BO105 25-60-95

Part: GOVERNOR — FLUCTUATES (ENGINE) · airframe 6,445 hrs

GOVERNOR PRODUCING FLUCTUATING TORQUE. REPAIRED AND TESTED IAW HONEYWELL OHM FORM 15-1095A

Part: FLOAT — LEAKING (EMERGENCY MLG) · airframe 6,256 hrs

FLOAT BAG IS LEAKING THROUGH FABRIC IN SEVERAL PLACES. COMPLIED WITH ALL REPAIRS , TESTS AND INSPECTIONS IAW 25-60-95.

Part: FUEL CONTROL — MALFUNCTIONED (ENGINE) · airframe 5,914 hrs

FUEL CONTROL CAUSES HOT STARTS AND SLOW ACCELERATION. REPAIRED AND TESTED IAW HONEYWELL OHM FORM 15 602E CEB 1382 EMBODIED.

Part: ENGINE — MAKING METAL (NACELLE) · airframe 5,606 hrs

ENGINE IS MAKING METAL. INITIAL INSPECTION FOUND COMPRESSOR ATTACHMENT HARDWARE LOOSE. 2 1/2 BEARING MAKING METAL, SPIN ADAPTER GEARSHAFT MAKING METAL. COMPRESSOR DUE 1750 INSPECTION. CHANGED CASE HALVES.ACTION TAKEN: INSTALLEDD NEW 2 1/2 BEARING INSTALLED NEW SPUR ADAPTER COMPLIANCE CEB-A-1386 - GEARBOX ASSY INSPECTION OF HELICAL TORQUEMETER GEARSHAFT. CHECKED AD2001-24-12.

Part: HEAD — MALFUNCTIONED (TAIL ROTOR) · airframe 5,410 hrs

HEAVY LEFT PEDAL FORCES WITH MAX WEIGHT ADJUSTMENT. NO OBVIOUS DEFECTS. ACTION TAKEN: REMOVED BLADES AND MOUNTING FORKS. VISUALLY INSPECTED AND FOUND NO DEFECTS. RE-ASSEMBLED AND STATIC BALANCED., REPAIRED IAW BO-105 REM 301, MM CH 33, 34, 102 & 106.

Part: ENGINE — MAKING METAL (NACELLE) · airframe 5,392 hrs · 8,852 cycles

ENGINE IS MAKING METAL. HAS METAL ON MAG PLUGS. 2 1/2 BEARING INNER RFACE HAS METAL. GROOVES ON SEVERAL ROLLERS. ACTION TAKEN: DISASSEMBL3D ENGINE CAE-836436, TURBINE, COMPRESSOR, GEARBOX. CHANGED 11/2 BEARING SN MR55741, INSTALLED MP75985, GEARSHAFT SN 69437 INSTALLED CI21-543. C/W AIRWORTGHINESS DIRECTIVES OR SB'S AS PER CEB-1298. SEAL ON GEARBOX ASSY - PRESSURE OIL FITTINGS.

Part: BEARING — SPALLED (NR 5)

NR 5 BEARING NEW WHEN INSTALLED. HAS SPALLING AND PITS ON BALLS.

Part: INDICATOR — ERRATIC (COCKPIT)

RADAR ALTIMETER HAS ERRATIC READINGS.

Part: INDICATOR — MISMANUFACTURED (COCKPIT)

NEW RADAR ALTIMETER INSTALLED ON AIRCRAFT WITH ONLY 2.3 HOURS AND GIVES FALSE INDICATION.

Part: BLADE — DEFECTIVE (M/R)

BLADES REM'D FROM A/C WITH 767.8 HRS TSN, DUE TO GROUND SHUFFLE. RETURNING REQUESTING ROOT END EXAMINATION AND REPAIR. SERIAL NUMBERS OF BLADES ARE: 72, 95, 98, 100 .

Part: SUMP COVER — LEAK (ENG)

PIT ON SMALL O-RING SEAL AREA; OIL LEAK.

Part: BELLOWS SEAL — GROOVED (ENGINE)

SEAL HAS 93.6 HOURS T.T.. SEAL HAS GROOVES ON CONTACT FACE OF CARBON SEAL.

Part: COUPLING — DEFECTIVE (ENG N2)

SHAFT UNDERCUT DIMENSIONS; SHAFT INDENTIONS BETWEEN SEAL GROOVES AND BELOW SPLINE END (NOT SCALLOPED END) OD OF SHAFT AT THESE POINTS DIFFER. 1.093" AND 1.104".

Part: COUPLING — ROUGH SPLINES (N1 COUPLING)

SPLINES ARE ROUGH ON N1 COUPLING.

Part: NOZZLE — FAILED (2ND STAGE)

WHILE CUTTING 2ND STG B.T.P. CLEARANCE METAL BEGAN TO FLAKE OFF. 2ND STAGE NOZZLE SENT IN FOR OVERHAUL