N850LS

Fairchild SA227-DC No injuries Part 135 — LONE STAR AIRLINES

Operated by LONE STAR AIRLINES (per NTSB report)

ATA 6120

Part: BLOCK — LEAKING (BETA SYS)

AFTER TURNING BLEEDS ON DURING CLIMB, CREW IMMEDIATELY NOTICED AN ODOR AND THEN SAW SMOKE. BLEEDS WERE TURNED OFF, CHECKLIST ITEMS COMPLETED. CHECKED FOR ANNUNCIATOR LIGHTS, PRESSURE INDICATIONS, AND FIRE LIGHT INDICATIONS, ALL WERE NORMAL. CREW RETURNED TO STATION AND LANDED WITH NO FURTHER INCIDENT. INITALLY SUSPECTED ACM FAILURE, BUT FOUND OIL LEAKING IN THE LT ENGINE SPINNER/ COWL AREA. TIGHTEN FITTING, SAFETIED AND PERFORMED GROUND RUN LEAK CHECK, OPS CHECK GOOD. PERFORMED OPERATIONAL CHECK FLIGHT, OPS CHECK GOOD. (K)

ATA 2400

Part: CURRENT LIMITER — FAILED (COCKPIT)

FLT 6016 - BOI - DURING CLIMB-OUT, THE CREW COULD NOTICED A BURNING ODOR. THE CO-PILOT SAW SMOKE COMING FROM THE ELECTRICAL BOX LOCATED BEHIND THE CAPTAINS SEAT. THE CREW FOLLOWED EMERGENCY PROCEDURES AND RETURNED TO STATION WTH NO FURTHER INCIDENT. FAILED CURRENT LIMITER. REPLACD LEFT ESS BUSS CURRENT LIMITER, SYSTEM OPS CHECK GOOD. (M)

ATA 5270

Part: SWITCH — OUT OF ADJ (CARGO DOOR)

DURING CRUISE, THE CARGO DOOR WARNING LIGHT CAME ON. CREW RETURNED TO STATION. THE CARGO WARNING LIGHT STAYED ON. DOOR HANDLE CLOSURE OR MICROSWITCH RIGGING. ADJUSTED CARGO DOOR REAR BOTTOM BAYONET MICROSWITCH. ALL OTHER SWITCHES, CLICK CLACKS, AND WARNING SYSTEM WIRING WERE CHECKED, NO DEFECTS WERE NOTED. SYSTEM OPS CHECKED GOOD. (M)

ATA 5270

Part: WARNING SYSTEM — MALFUNCTIONED (COCKPIT)

DURING CLIMB-OUT, THE CARGO DOOR WARNING LIGHT CAME ON. CREW RETURNED TO THE STATION. THE CARGO DOOR WARNING LIGHT WENT OUT WHILE THE AIRCRAFT WAS TAXIING BACK TO THE GATE. MAINTENANCE INSPECTED THE CARGO DOOR CLICK CLACKS AND DOOR WARNING SYSTEM AND FOUND NO DEFECTS. THE DOOR WAS OPENED AND SHUT MULTIPLE TIMES WITH CORRECT OPERATION EVERY TIME. FLIGHT WAS CONTINUED WITH NO FURTHER PROBLEMS. (M)

ATA 2910

Part: HYDRAULIC LINE — LEAKING (HYD SYSTEM)

BIL - FLT 2585 - DURING CLIMBOUT, BOTH HYDRAULIC PRESSURE LIGHTS AND THE HYDRAULIC PRESSURE GAUGE BEGAN TO FLUCTUATE AT ABOUT 13,000 FEET. THEN THE HYD PRESS LIGHTS CAME ON STEADY AND HYDRAULIC PRESSURE INDICATION DROPPED TO 200. THE CREW VERIFIED THE BEST OPTION WITH THE CURRENT WEATHER WAS TO RETURN TO STATION. FLAPS WOULD ONLY EXTEND TO BETWEEN QUARTER AND HALF FLAPS. CREW THEN MANUALLY EXTENDED THE GEAR. AIRCRAFT LANDED WITH NO FURTHER INCIDENT. THE HYDRAULIC PRESSURE LOSS WAS DUE TO HYDRAULIC SYSTEM LEAK IN THE RIGHT FLAP WELL. REPLACED LINE, SYSTEM OPS CHECK AND LEAK CHECKED GOOD. (M)

ATA 5270

Part: WARNING SYSTEM — MALFUNCTIONED (COCKPIT)

CARGO DOOR LIGHT CAME ON DURING CLIMB-OUT, CREW RETURNED TO STATION, LIGHT WENT OUT ON LANDING. DOOR WAS OPENED AND CLOSED MULTIPLE TIMES, LATCHES AND SWITCHES WERE INSPECTED, SYSTEM OPS CHECKED GOOD. NO FURTHER DEFECTS REPORTED. (M)

ATA 2910

Part: FITTING — LEAKING (HYD SYSTEM)

ON SHORT FINAL, THE CREW NOTICED THE RIGHT HYD PRESS LIGHT CAME ON. GEAR WAS ALREADY DOWN AND FLAPS WERE AT FULL. CREW NOTICED FLUCTUATIONS IN HYD PRESSURE. CREW TURNED OFF NOSE WHEEL STEERING. LANDING WAS UNEVENTFUL LT HYD PRESS LIGHT CAME ON JUST BEFORE REACHING THE GATE. CREW SHUT DOWN AIRCRAFT WITH NO FURTHER PROBLEMS. HYDRAULIC LEAK IN LEFT FLAP ACTUATOR AREA. REPLACED BULKHEAD FITTING THAT GOES FROM FLAP HARD LINE TO FLEX LINE IN AFT END OF NACELLE. SERVICED AND BLED HYDRAULIC SYSTEM. HYDRAULIC SYSTEMS OPS CHECKED GOOD. (M)

ATA 2910

Part: FITTING — LEAKING (HYD SYSTEM)

ON SHORT FINAL, THE CREW NOTICED THE RT HYD PRESS LIGHT CAME ON. GEAR WAS ALREADY DOWN AND FLAPS WERE AT FULL. CREW NOTICED FLUCTUATIONS IN HYD PRESSURE. CREW TURNED OFF NOSE WHEEL STEERING. LANDING WAS UNEVENTFUL LT HYD PRESS LIGHT CAME ON JUST BEFORE REACIHNG THE GATE. CREW SHUT DOWN AIRCRAFT WITH NO FURTHER PROBLEMS. HYDRAULIC LEAK IN LEFT FLAP ACTUATOR AREA. REPLACED BULKHEAD FITTING THAT GOES FROM FLAP HARD LINE TO FLEX LINE IN AFT END OF NACELLE. SERVICED AND BLED HYDRAULIC SYSTEM. HYD SYSTEMS OPS CHECKED GOOD. (M)

ATA 5270

Part: SWITCH — DIRTY (CARGO DOOR)

JBR - FLT 1323 - FOUND CARGO DOOR WARNING LIGHT CAME ON BETWEEN 10 AND 12,000 FEET DURING CLIMB-OUT. CREW FOLLOWED CHECKLIST AND THEN RETURNED TO STATION. CLEANED AND CHECKED CARGO DOOR SWITCHES, GROUND OPS CHECK GOOD. FLIGHT TEST PERFORMED, OPS CHECKED GOOD. (M)

ATA 7260

Part: IDLER GEAR — FAILED (RT ENGINE)

AFTER TAKEOFF FROM WDG, THE CREW GOT A CHIP LIGHT ON THE RIGHT ENGINE. THE CAPTAIN DECIDED TO RETURN TO WDG AND MAKE A PRECAUTIONARY SHUTDOWN OF THE RIGHT ENGINE. DURING THE PRE-SHUTDOWN CHECKS, THE ENGINE FLAMED OUT. THE CREW THEN MADE A LANDING AT WDG WITH NO FURTHER INCIDENT. ON INSPECTION, IT WAS FOUND THAT ACCESSORY DRIVE GEAR ASSEMBLY, P/N 310601-6, S/N 3P17909, HAD FAILED AND THE IDLER GEAR ASSEMBLY, P/N 3101599-2, S/N 3P17792, HAD ALSO FAILED. BOTH ASSEMBLIES WERE REPLACED AND THE AIRCRAFT WAS RETURNED TO SERVICE. (M)

ATA 3411

Part: PITOT LINE — LOOSE (COCKPIT)

SHORTLY AFTER TAKEOFF FROM DFW EN ROUTE TO HOT, THE FIRST OFFICERS PITOT SYSTEMS INSTRUMENTS FAILED. THE PILOT RETURNED TO DFW WITHOUT FURTHER INCIDENT. THE AIRCRAFT WAS THEN FERRIED TO HOT MAINTENANCE. UPON INSPECTION, THE PITOT LINE GOING INTO THE FDR WAS FOUND TO BE LOOSE. THE LINE WAS RESECURED AND ALL TESTS COMPLETED CHECKED NORMAL. AIRCRAFT WAS RETURNED TO SERVICE.

ATA 3610

Part: CHECK VALVE — STUCK OPEN (RT ENGINE)

CREW REPORTED LOW SUCTION LIGHT ON ANNUNCIATOR AND SUCTION GAUGE READ ZERO WITH RIGHT ENGINE RUNNING. AIRCRAFT WAS FERRIED TO HOT MAINTENANCE BASE. MECHANIC REMOVED AND REPLACED THE RT ENGINE CHECK VALVE. OPS CHECKED GOOD, ENGINE RUN PERFORMED, ALL CHECKS WERE NORMAL. AIRCRAFT WAS RETURNED TO SERVICE.