N236AS

Part: STRINGER — CRACKED (LT WING)

DURING SCHEDULED MAINTENANCE IN TXK, THE LEFT WING NR 10 STRINGER WAS CRACKED AT THE NR 1 FUEL PANEL. MAINTENANCE REPAIRED THE CRACK IN THE LEFT NR 10 STRINGER IAW EMB-120 SRM 57-20-03. AIRCRAFT OK FOR SERVICE. (M)

Part: LIGHT — INOPERATIVE (EXTERIOR)

DURING SCHEDULED MAINTENANCE, THE RIGHT WING UPPER EMERGENCY LIGHT WAS INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE BURNED OUT BULB FROM THE RIGHT WING UPPER EMERGENCY LIGHT ASSEMBLY. OPERATIONAL CHECKS GOOD. AIRCRAFT OK FOR SERVICE. (M)

Part: LIGHT — INOPERATIVE (CABIN)

DURING SCHEDULED MAINTENANCE IN TXK, THE RIGHT OVERWING EMERGENCY LIGHT WAS INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE RIGHT OVERWING EMERGENCY LIGHT. OPERATIONAL CHECKS GOOD. AIRCRAFT OK FOR SERVICE. (M)

Part: ENGINE — FAILED (LEFT)

FLT 4254 - DURING CRUISE FLIGHT FROM ILM TO ATL, THE LEFT ENGINE FAILED. AN EMERGENCY WAS DECLARED. AIRCRAFT DIVERTED TO AGS AND LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED LEFT ENGINE. THE MRR REMAINS OPEN PENDING RESULTS OF TEARDOWN REPORT. (M)

Part: TOWERSHAFT — BROKEN (LT ENGINE)

FLT 4254 - DURING CRUISE FLIGHT FROM ILM TO ATL, THE LEFT ENGINE FAILED. AN EMERGENCY WAS DECLARED. AIRCRAFT DIVERTED TO AGS AND LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED LEFT ENGINE. THE TEARDOWN REPORT FROM STANDARD AERO REVEALED A TOWERSHAFT FAILURE. THE HP SPOOL COULD NOT BE TURNED THROUGH THE START/GENERATOR GEAR. ENGINE WAS REPAIRED AND RETURNED TO SERVICE. (M)

Part: LIGHT — INOPERATIVE (CABIN)

DURING GROUND INSPECTION IN DFW, CREW FOUND FLOOR EMERGENCY LIGHTS AT ROW 5 AS WELL AS THE EXIT SIGN ON THE FIGHT ATTENDANT CLOSET, AND NUMEROUS CEILING EMERGENCY LIGHTS INOPERATIVE. MAINTENANCE INSPECTED THE FUSES AND POWER SUPPLIES FOR THE EMERGENCY LIGHTING SYSTEM. ALL OPERATIONAL CHECKS WERE NORMAL. AIRCRAFT OK FOR SERVICE. (M)

Part: CONNECTOR — INOPERATIVE (CABIN)

DURNG HANGAR MAINTENANCE IN TXK, MAINTENANCE FOUND EMERGENCY TRACK LIGHTING INOPERATIVE AT ROW 1, 2 AND 6, 7. MAINTENANCE REPAIRED FAULTY CONNECTIONS ON THE EMERGENCY TRACK LIGHTING. OPS CHECKS GOOD. AIRCRAFT OK FOR SERVICE. (M)

Part: SWITCH — INTERMITTENT (COCKPIT)

FLT 4063 - DURING CLIMB-OUT FROM ATL, AT APPROXIMATELY 15,000 MSL, AIRCRAFT EXPERIENCED LEFT ENGINE FLAME OUT. AIRCRAFT RETURNED TO AND LANDED SAFELY IN ATL. MAINTENANCE REMOVED AND REPLACED THE LEFT ENGINE HYDROMECHANICAL UNIT. TEARDOWN REPORTS FROM PRECISION ELECTRONICS REVEAL THE ENGINE FAILURE WAS CAUSED BY THE COMBINATION OF A BAD 14K PRESSURE SWITCH AND OUT OF TOLERANCE CALIBRATION ON THE HMU. (M)

Part: ENGINE — FAILED (LEFT)

FLT 4063 - DURING CLIMB-OUT FROM ATL, AT APPROXIMATELY 15,000 MSL, AIRCRAFT EXPERIENCED LEFT ENGINE FAILURE. AIRCRAFT RETURNED TO AND LANDED SAFELY IN ATL. MAINTENANCE REMOVED AND RPLACED THE LEFT ENGINE HYDROMECHANICAL UNIT. ENGINE IS CURRENTLY UNDERGOING MAINTENANCE. (M)

Part: BLEED VALVE — LEAKING (ENGINE)

FLT 4878 - SPS-DFW - DURING CLIMB-OUT, AT ABOUT 3600 FEET, THE RIGHT ENGINE DUCT LEAK LIGHT ILLUMINATED. THE ENGINE WAS SECURED AND ABOUT 45 SECONDS LATER THE LIGHT EXTINGUISHED. THE ENGINE WAS RESTARTED AND THE LIGHT DID NOT ILLUMINATE. AIRCRAFT RETURNED TO SPS AND LANDED SAFELY. NO DUCT LEAK INDICATIONS WERE NOTED ON GROUND. MAINTENANCE REMOVED AND REPLACED RIGHT ENGINE BLEED DUCT O-RINGS AND DUCT OVERTEMP SENSORS AT INBOARD LEADING EDGE AND WING ROOT FAIRING. MAINTENANCE ALSO REMOVED AND REPLACED RIGHT ENGINE BLEED VALVE. (M)

Part: HMU — INOPERATIVE (ENGINE)

FLT 4960 - DURING FLIGHT FROM HOU TO DFW AFTER 2 MINUTES IN CRUISE, THE LEFT ENGINE WENT TO 20 PERCENT TORQUE, NP WENT TO 85 PERCENT, NH WENT TO 80 PERCENT, AND ENGINE OIL PRESSURE DROPPED TO ZERO. TEN TO TWELVE SECONDS AFTER FLAMEOUT, ENGINE STARTED BACK UP AND EVERYTHING WAS NORMAL. AIRCRAFT CONTINUED TO DFW AND LANDED SAFELY. MAINTENANCE REPLACED THE HMU AND FUEL PUMP. MAINTENANCE RAN ENGINES AND TESTED SYSTEM. OPERATIONAL CHECKS WERE GOOD. AIRCRAFT RETURNED TO SERVICE. (M)

Part: HINGE FITTING — BROKEN (RMLG)

RIGHT MAIN LANDING GEAR AFT INBOARD DOOR, AFT HINGE FITTING WAS FOUND BROKEN DURING C-CHECK INSPECTION. POSSIBLE CAUSE: FATIGUE. SUBMITTER RECOMMENDED REPLACING MONITOR AT REGULAR INTERVALS. (X)

Part: STRINGER — CRACKED (RT WING) · airframe 32,438 hrs

DURING INSPECTION, FOUND RT STR NR 10 CRACKED. MAINTENANCE REPAIRED CRACK FOLLOWING EO 120-57-0097 WHICH OUTLINES PROCEDURES FOR STR 10 CRACK REPAIR. (X)

Part: BATTERY PACK — DISCHARGED (CABIN)

DURING INSPECTION, NR 2 EMERGENCY BATTERY PACK FOUND TO BE INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE NR 2 EMERGENCY BATTERY PACKS. OPERATIONAL CHECKS WERE GOOD. AIRCRAFT RETURNED TO SERVICE. (X)

Part: BATTERY PACK — DISCHARGED (CABIN)

DURING INSPECTION, NR 2 EMERGENCY BATTERY PACK FOUND TO BE INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE NR 1 EMERGENCY BATTERY PACKS. OPERATIONAL CHECKS WERE GOOD. AIRCRAFT RETURNED TO SERVICE. (M)

Part: FRAME — CRACKED (LT/RT NACELLE)

DURING ROUTINE MAINTENANCE CHECK, CRACKS WERE FOUND ON BOTH ENGINE NACELLE NR 1 FRAMES. ON THE LT FRAME, THE CRACK IS LOCATED ON THE LOWER SIDE OF THE STIFFENING WEB BETWEEN THE TOP OUTBOARD MOUNTING BOLT HOLE AND THE OUTBOARD EDGE OF THE FRAME. ON THE RT FRAME, THE CRACK IS LOCATED ON THE LOWER SIDE OF THE STIFFENING WEB BETWEEN THE TOP OUTBOARD MOUNTING BOLT HOLE AND THE OUTBOARD EDGE OF THE FRAME. SUBMITTER RECOMMENDED REPLACING BOTH FRAMES AND CONTINUE MONITORING IAW EXISTING MAINTENANCE CHECKS.

Part: BEAM — CORRODED (BS 4088-6467)

LEFT OMEGA BEAM, IN BETWEEN STA 4088.D AND STA 6467.6, WAS FOUND CORRODED BEYOND THE MANUFACTURER'S ALLOWABLE LIMITS. THE OMEGA BEAM HAD THREE AREAS OVER A 12 INCH LENGTH WHICH WERE OUT OF LIMITS. THE FIRST AREA WAS 1.5 INCHES WIDE BY 1 INCH IN LENGTH, AND WAS .017 INCH DEEP. THE SECOND AREA WAS .75 INCH WIDE BY 1 INCH IN LENGTH AND WAS .008 INCH DEEP. THE THIRD AREA WAS .250 INCH IN WIDTH BY 1 INCH IN LENGTH BY .012 INCH DEEP AND WAS LOCATED ON THE OUTBOARD RADIUS OF THE BEAM. DUE TO THE EXTENT OF THE CORROSION, THE CUSTOMER ADVISED THE SECTION OF OMEGA BEAM BE REPLACED.

Part: NUT — LOOSE (MLG)

DURING C-CHECK INSPECTION OF THE LT AND RT MLG, THE NUT RETAINING THE INBOARD TRUNNION BEARING WAS FOUND TO HAVE PLAY. THE LOCK WASHER WAS ALL THAT WAS HOLDING NUT IN PLACE. UPON REMOVAL OF GEARS, FOUND THE ADJUSTMENT SHIM OF THE OUTBOARD SIDE OF GEAR WAS DETERIORATING.

Part: RIB — GOUGED (AILERON)

DURING PERFORMANCE OF C-CHECK INSPECTION TASK ON THE LEFT WING, THE AILERON ATTACH RIB 20 WAS FOUND TO HAVE A GOUGE APPROXIMATELY 1 INCH LONG BY .027 INCH DEEP ON THE OUTBOARD SIDE. THIS WAS APPARENTLY CAUSED BY PREVIOUS REMOVAL OR INSTALLATION OF AILERON. THE AREA OF DAMAGE IS HARD TO SEE WITH AILERON INSTALLED.

Part: WIRE — BROKEN (CABIN)

TXK/DFW - FLT 7998 - EN ROUTE, LEFT ENGINE DUCT LEAK LIGHT ILLUMINATED. THE CREW SHUT DOWN LEFT ENGINE AS PRECAUTIONARY MEASURE AND DECLARED AN EMERGENCY. LANDING WAS MADE SAFELY AND WITHOUT INCIDENT IN DFW. REPAIRED BROKEN WIRES UNDER FLOOR AT ROW 5. OPERATIONAL CHECKS WERE GOOD AND AIRCRAFT RELEASED FOR FURTHER SERVICE. (X)

Part: WATER SEPARATOR — DEFECTIVE (RT WING)

AFTER TAKEOFF FROM ATL-MCN, THE RIGHT ENGINE DUCT LEAK LIGHT ILLUMINATED. FOLLOWED POH PROCEDURES AND SHUTDOWN RIGHT ENGINE. FLIGHT RETURNED TO ATL WHERE LANDING WAS MADE SAFELY AND WITHOUT INCIDENT. REMOVED AND REPLACED WATER SEPARATOR AND PRESSURE REGULATOR. ALSO, REPAIRED BLEED LINE IN RIGHT LEADING EDGE. OPERATIONAL AND LEAK CHECK GOOD. PRESSURE REGULATOR P/N 38E96-6A. (Z)