N138QS

Part: CIRCUIT BOARD — FAILED (TRIM SYSTEM) · airframe 1,222 hrs · 1,145 cycles

RT ROLL TRIM RUNAWAY IN FLIGHT. TROUBLESHOT RUNAWAY TRIM TO PCB CARD A194. REMOVED A194 PCB AND INSTALLED A NEW PCB CARD. AUTOPILOT / ROLL TRIM OPS CHECKS GOOD. PREFORMED MX IAW MM 27-11 OF THE IPC 27-00 AND 34-00.

Part: SWITCH — FAILED (MLG) · airframe 1,209 hrs · 1,133 cycles

AT GEAR EXTENSION, NO RT MAIN GEAR INDICATION. INDICATOR TESTED GOOD. PERFORMED LANDING GEAR NOT DOWN AND LOCKED CHECKLIST A27. INDICATES GEAR DOWN AND LOCKED WITH NO INDICATOR. TROUBLESHOT TO BAD DOWN LOCK SWITCH. REMOVED AND REPLACED RT MLG DOWN LOCK IAW WDM 32-31-02. RIGGED SWITCH IAW MM 32-10-00. PERFOMED LANDING GEAR FUNCTIONAL CHECK IAW MM 32-00-00. OPS CHECKS GOOD AT THIS TIME.

Part: TRIM SYSTEM — MALFUNCTIONED · airframe 1,206 hrs · 1,130 cycles

ENROUTE, RECEIVED A (A AMBER BOX) ON THE PFD, FOLLOWED BY A RT ROLL TRIM RUNAWAY. FOLLOWED THE EMERGENCY CHECKLIST, DISCONNECTED TRIM AND PULLED CB. INSPECTED AND FOUND RIGHT SPOILER UP 10 DEGREES AND LEFT AT NEUTRAL, AND INSPECTED ACTUATOR WITH NO DEFECTS. PERFORMED AN OPERATIONAL CHECK OF ROLL TRIM SYSTEM, LEFT NEUTRAL CHECK, RT NEUTRAL CHECK, AUTOPILOT CHECK & TIME TRIM CHECK AND NO FAULTS FOUND. VERIFIED METER OPERATED SMOOTHLY, FROZE ACTUATOR WITH NO DEFECTS, & NO HISTORY IAW MM 27-10-00-201, 22-13-00-201

Part: UNLOCK SWITCH — INOPERATIVE (COCKPIT) · airframe 808 hrs · 757 cycles

AFTER TAKEOFF UPON GEAR RETRACTION, LANDING GEAR RED INTRANSIT LIGHT REMAINED ILLUMINATED. REMOVED AND REPLACED LT MAIN LANDING GEAR UPLOCK SWITCH P/N: MS24331-1. PERFORMED LANDING GEAR OPERATION CHECK. OP CHECKS GOOD. ALL MAINTENANCE PERFORMED IAW MM 32-10-00, 32-30-00 AND 12-10-00.

Part: WARNING LIGHT — ILLUMINATED (MLG) · airframe 771 hrs · 718 cycles

AFTER DEPARTURE, THE RED, GEAR IN TRANSIT LIGHT REMAINED ILLUMINATED.

Part: UPLOCK — OUT OF RIG (MLG) · airframe 771 hrs · 718 cycles

AFTER DEPARTURE, THE RED GEAR IN TRANSIT LIGHT REMAINED ILLUMINATED. PERFORMED LANDING GEAR SWINGS AT FULL HYDRO POWER ALL CHECK OK. PERFORMED SWINGS AT LOWER HYDRO SETTINGS AND FOUND NOSE GEAR NOT RETRACTING FULLY AND CAUSING MAIN DOORS TO STAY OPEN. CHECK RIGGING ON NOSE GEAR UPLOCK MECHANISM AND FOUND OUT OF RIG. ADJUSTED UPLOCK HOOK AND ADDED SHIMS TO CATCH PIN. PERFORMED SEVERAL GEAR SWINGS AND LOW AND FULL POWER. OPS CHECK. ALL WORK IAW MM 32-20-00 - NO DEFECTS NOTED WITH LANDING LIGHT.

Part: INDICATOR — MALFUNCTIONED (MLG) · airframe 759 hrs · 707 cycles

UPON GEAR RETRACTION, ALL GREEN DOWN AND LOCKED LIGHTS EXTINGUISHED. HOWEVER, RED IN TRANSIT LIGHT REMAINED ILLUMINATED. REPLACED GROUND SAFE PCB A161. OPS CHECK GOOD. IAW MM CH 32-60-00.

Part: CIRCUIT BOARD — FALSE INDICATION (MLG) · airframe 759 hrs · 707 cycles

UPON GEAR RETRACTION,ALL GREEN DOWN AND LOCKED LIGHTS EXTINGUISHED. HOWEVER,RED IN TRANSIT LIGHT REMAINED ILLUMINATED. REPLACED GROUND SAFE PCB A161. OPS CHECK GOOD. IAW MM 32-60-00.

Part: CONTROL SWITCH — INOPERATIVE (MLG) · airframe 687 hrs · 643 cycles

RED LANDING GEAR UNSAFE LIGHT REMAINS ON AFTER GEAR RETRACTION. REPLACED LANDING GEAR CONTROL SWITCH ASSY WITH NEW UNIT. PERFORMED LANDING GEAR FUNCTIONAL CHECK - SWUNG GEAR 5 TIMES WITH NO DEFECTS. OPS CHECKS GOOD. MX IAW MM CH 32-30-00.

Part: UPLOCK SWITCH — OUT OF ADJUST (MLG) · airframe 667 hrs · 629 cycles

RED LANDING GEAR UNSAFE REMAINS ON AFTER GEAR RETRACTION. (M2B) PERFORMED GEAR SWINGS WITH NO ADVERSE INDICATIONS CHECKED CLEARANCES OF GEAR DOOR UPLOCK ROLLERS. NO DEFECTS FOUND, CHECKED MLG DOOR UPLOCK SW FOR PLUNGER OVERTRAVEL. FOUND RH SW. OUT OF ADJUSTMENT. ADJUSTED RH MLG DOOR UPLOCK SW. TO WITHIN LIMITS. CHECKED GEAR UPLOCK SWITCHES & FOUND RH SW OUT OF ADJ. FOR PLUNGER OVER TRAVEL. ADJUSTED GEAR UPLOCK SW. LUBED RH UPLOCK MECHANISM. PERFORMED SEVERAL MORE GEAR SWINGS WITH NO FURTHER DEFECTS NOTED IAW H400XP MM 32-00-00, 32-10-00 & 12-20-00.

Part: WARNING LIGHT — ILLUMINATED (COCKPIT) · airframe 659 hrs · 623 cycles

ON GEAR RETRACTION, RED LIGHT IN LANDING GEAR HANDLE REMAINED ILLUMINATED AND ALL GREEN LIGHTS EXTINGUISHED. CYCLED LANDING GEAR DOWN AND ALL GREEN AND RED LIGHTS FUNCTIONED PROPERLY. RETRACTED GEAR AGAIN + RED GEAR HANDLE LIGHT REMAINED ILLUMINATED.

Part: UPLOCK — OUT OF ADJUST (MLG) · airframe 636 hrs · 601 cycles

LANDING GEAR IN TRANSIT / UNSAFE LIGHT WOULD NOT EXTINGUISH AFTER LANDING GEAR RETREACTION. ACCESSED CONNECTORS P271 AND P272. OHMED OUT DOOR CLOSED SWITCH & UPLOCK SWITCH PER WDM 32-61-01-02 NO DEFECTS NOTED. JACKED ACFT & INSTALLED HYDRAULIC MULE. ACCOMPLISHED MLG FUNCTIONAL TEST/PREOPS CHECKS. ON PERFORMING PREOPS CHECKS AT 950 PSI & 2.0 GPM EXPERIENCED AN UNSAFE HANDLE INDICATION WITH BOTH MLG DOORS OPEN. DROPPED HYDRAULIC PRESSURE TO ZERO & NOTED NLG AND RT MLG GEAR DROP OUT OF WELL. CHECKED & ADJUSTED NLG UPLOCK & RT MLG UPLOCK PER MM 32-20-00 & 32-30-00. REPEATED PREOPS CHECKS AT 950 PSI & 2.0 GPM SEVERAL TIMES, NO FAULTS INDICATED. ACCOMPLISHED OPS CHECKS. SERVICED RESERVOIR.

Part: LANDING GEAR — MALFUNCTIONED · airframe 562 hrs · 541 cycles

RED LIGHT IN MLG HANDLE STAYS ON AFTER GEAR RETRACTION. JACKED ACFT & INSTALLED HYD MULE. CHECKED MLG UPLOCK ASSY'S & ADJUSTED RT MLG UPLOCK IAW MM 32-30-00. ACCOMPLISHED GEAR SWINGS WHILE SLOWLY REDUCING HYD PRESSURE. AT 1200 PSI RED HANDLE MLG LIGHT STAYED ON & BOTH MLG DOORS REMAINED OPEN. WITH HYD PRESSURE STILL APPLIED BOTH MLG REMAINED RETRACTED WITH MLG DOORS OPEN. PULLED ON NLG DOORS & NLG EXTENDED. CHECKED RIGGING OF NLG UPLOCK ASSY & ADJUSTED PER MM 32-30-00. POWERED UP HYD SYS & ACCOMPLISHED MLG FUNCTIONAL TEST PER MM 32-00-00. POWERED UP HYD SYS & ACCOMPLISHED MLG FUNCTIONAL TEST PER MM 32-00-00 NO DEFECTS NOTED. REMOVED ACFT FROM JACKS & REMOVED HYD MULE. CHECKED SERVICE OF HYD RESERVOIR, NO DEFECTS NOTED.

Part: STRUT — LOW (NLG) · airframe 562 hrs · 540 cycles

AFTER GEAR RETRACTION, RED IN TRANSIT LIGHT REMAINED ILLUMINATED. JACKED ACFT, REMOVED LT HYDRAULIC PUMP & INSTALLED ON HYDRAULIC POWER UNIT. CYCLED GEAR 30 TIMES WITH NO FAILURES NOTED. ACCESSED CONNECTORS P271 & P272 IN LT & RT GEAR WELLS. OHMED OUT UPLOCK SWITCHED & DOOR SWITCHES NO DEFECTS WERE NOTED. REINSTALLED ALL PREVIOUSLY REMOVED CONNECTORS AND PANELS. ACCESSED PCB A162 AND CHECKED CONNECTOR P162 FOR LOOSE OR DAMAGED PINS NO DEFECTS WERE NOTED. ACCESSED RELAY K1 ON PCB A162 & OHMED OUT RELAY CONTACTS NO DEFECTS WERE NOTED. REINSTALLED PCB A162 AND CONNECTOR, ACCOMPLISHED MAIN GEAR LUBRICATION PER 400XP MM 12-20-00. ACCOMPLISHED 25 GEAR SWINGS WITH NO DEFECTS NOTED. REMOVED LT HYDRAULIC PUMP FROM HYDRAULIC POWER UNIT AND REINSTALLED ON LT ENGINE. INSTALLED HYDRAULIC MULE IAW MM 29-00-00. ACCOMPLISHED GEAR SWINGS WHILE SLOWLY REDUCING HYDRAULIC SYSTEM PRESSURE, AT 1000 PSI WE NOTICED BOTH MAIN GEAR DOORS WERE HESITATING TO CLOSE. CONTINUED DROPPING PRESSURE, AT 850 PSI ALL GEAR RETRACTED BUT MAIN GEAR DOORS DID NOT CLOSE. WITH HYDRAULIC PRESSURE ON AND IB GEAR DOORS STILL OPEN WE HIT THE LT MAIN GEAR & NOTHING HAPPENED, WE THEN HIT THE RT GEAR AND BOTH DOORS CLOSED. WE REPEATED THIS SEVERAL TIMES WITH THE SAME RESULTS. CHECKED NOSE STRUT SERVICING AND FOUND IT LOW. SERVICED NOSE STRUT IAW MM 12-10-00 NO DEFECTS NOTED. ACCOMPLISHED HYDRAULIC SYSTEM FUNCTIONAL CHECKS 25 OR MORE TIMES NO DEFECTS OR LEAKS WERE NOTED. REMOVED HYDRAULIC MULE, SERVICED HYDRAULIC RESERVOIR AND LOWERED AIRCRAFT FROM JACKS ALL WORK IAW MM 29-00-00, 12-20-00, 12-10-00 32-30-00 AND WDM 32-31-02, 32-31-01-02

Part: LANDING GEAR — MALFUNCTIONED · airframe 537 hrs · 510 cycles

AFTER TAKEOFF, GEAR RETRACTED BUT IN TRANSIT RED LIGHT IN HANDLE DIDN'T GO OUT. TOWER REPORTED AT LEAST BOTH MAIN GEAR DOORS WERE OPEN. 11-01-07 JACKED AIRCRAFT, PERFORMED 5 GEAR SWINGS. NO DEFECTS NOTED. INSPECTED ALL GEAR UPLOCK HOOKS, SWITCHES AND RIGGING. NO DEFECTS NOTED. INSPECTED NOSE GEAR DOOR RIGGING. NO DEFECTS NOTED. PERFORMED 5 MORE GEAR SWINGS NOTING NO DEFECTS. NOTED NO PRIOR RELATED DISCREPANCIES. OPERATIONAL CHECK GOOD AT THIS TIME. ALL WORK IAW CH 32-02-03 OF THE H-400 M.M.

Part: WIRE — CHAFED (GEAR WARNING)

PILOT COMPLAINED OF INTERMITTENT GEAR UNSAFE INDICATION AND WARNING HORN. ALSO, ANTI-SKID WAS INOPERATIVE. FOUND WIRE BUNDLE IN THE LT WING TRAILING EDGE, JUST OUTBOARD OF THE INBOARD FLAP BELLCRANK HAD SHORTED AND BURNED. IT APPEARED THE SHRINK WRAP HAD CHAFED THROUGH TO THE BUNDLE AND SHORTED TO GROUND. REPAIRED WIRE BUNDLE.