208Caravan

Parts most often named Engine (104) · Planetary Gear (2) · Turbine Blades (2) · Retainer (1)

PILOT REPORTED A CHIP LIGHT ILLUMINATED DURING APPROACH INTO ONT. BEGAN MONITORING PARAMETERS, AND HEARD A POP. OIL PRESSURE DROPPED FROM 101 TO 94 PSI. A FEW MOMENTS LATER SHE HEARD TO MORE POPS, THEN OIL PRESSURE WENT 0 AND ENGINE SHUT DOWN. PILOT DECLARED AN EMEGENCY AND WAS ABLE TO GLIDE THE AIRCRAFT TO BRACKETT AIRFIELD(KPOC) AND LAND ON RUNWAY.

FLIGHT NUMBER:4701 ROUTE: KGEG-KPSC DISCREPANCY: EXPERIENCED SMOKE IN THE COCKPIT, DECLARED AN EMERGENCY PERFORMED AIR TURN BACK TO KGEG CORRECTIVE ACTION: CLEANED DEICE FLUID FROM ENGINE COWLING, RAN ENGINE PER C208 CHECKLIST FOR 10 MINUTES WITH HEAT ON, NO ABNORMAL SMOKE OR SMELL NOTED

FLT. 4511 ENROUTE: ESD - MVW DISCREPANCY: R/H CHIP DETECTOR LIGHT ILLUMINATED IN FLIGHT. THE PILOT DECLARED AN EMERGENCY. LANDED IN MVW WITHOUT FURTHER INCIDENT. CORRECTIVE ACTION: MAINTENANCE INSPECTED THE RGB CHIP DETECTOR AND DISCOVERED A SMALL QTY. OF ALLOWABLE DEBRIS. PACKAGED DEBRIS AND OIL FILTER FOR SOAP IAW PWC 79-20-00. LEAK CHECKS GOOD.

Parts most often named Housing (12) · Bolt (11) · Brake Assy (10) · Brake Sys (9)

RIGHT BRAKE FAILURE ON TAXI OUT TO RUNWAY, CAUSING AIRCRAFT TO TURN LEFT. PROP STRUCK TAXI WAY LIGHT. AIRCRAFT HAD TO BE TOWED OFF TAXI WAY.

WHILE TAXING OUT, RH BRAKE FAILURE. A/C HAD TO BE TOWED OFF TAXIWAY, UPON SPINNING AIRCRAFT WITH TUG PROP STRUCK A GROUND TAXI LIGHT

LEFT BRAKE CALIPER INOPERATIVE. MECHANICS FOUND THE BRAKE CALIPER GUIDE PIN BROKEN AND THE PIN/CALIPER HAD DAMAGED THE TORQUE PLATE AS WELL AS THE TIRE/WHEEL ASSEMBLY. MECHANICS REPLACED THE CALIPER, TORQUE PLATE AND WHEEL/TIRE ASSEMBLY WITH NEW OR [S/N removed] PARTS. THESE PARTS ARE ON CONDITION AND THEIR TOTAL TIME IS NOT TRACKED. THE TOTAL TIMES AND CYCLES IN [S/N removed] BELOW ARE THE AIRCRAFT TOTAL TIMES AND CYCLES.

Parts most often named Bellcrank (16) · Bearing (13) · Motor (3) · Bracket (3)

FLT 7695 ENROUTE FRD-ESD, DIVERSION WO 208-257793, DISCREPANCY: FLAPS STOP AT 15 DEGREES, FLAP FAILURE. FLAP MOTOR CIRCUIT BREAKER POPPED OUT. DIVERTED TO BLI. NO EMERGENCY WAS DECLARED. LANDED WITHOUT INCIDENT. CORRECTIVE ACTION: MAINTENANCE INSPECTED THE FLAP SYSTEM FOR BINDING, NONE NOTED, LUBRICATED SYSTEM. REPLACED FLAP MOTOR AND COUPLER. OPS CHECK GOOD.

FLIGHT 8676, ENROUTE ANC - HOM, AIR TURNBACK/DISCREPANCY: FLAPS FAILED TO RETRACT AND FLAP MOTOR CIRCUIT BREAKER POPPED AFTER DEPARTURE INTO IMC/ICING CONDITIONS. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT WAS RETURNED TO ANC. CORRECTIVE ACTION: MAINTENANCE CLEANED AND LUBED THE FLAP JACKSCREW AND REPLACED THE ICE DETECTOR. OPS CHECK GOOD.

FLIGHT 8799, ENROUTE GEG-EAT/AIR TURNBACK DISCREPANCY: DURING CLIMB OUT, THE FLAP MOTOR CIRCUIT BREAKER POPPED. THE AIRCRAFT WAS RETURNED TO GEG AND LANDED WITHOUT INCIDENT. NO EMERGENCY WAS DECLARED. CORRECTIVE ACTION: MAINTENANCE INSPECTED THE FLAP SYSTEM AND LUBRICATED THE FLAP TRANSMISSION JACK SCREW. CHECKS GOOD. AIRCRAFT RETURNED TO [S/N removed].

Parts most often named Flap Track (22) · Bracket (5) · Support Bracket (5) · Skin (3)

DURING ANNUAL INSPECTION IT WAS NOTED THAT ALL FLAP TRACKS SHOWED SIGNS OF CORROSION. WITH THE DEGREE OF CORROSION IT WAS DECIDED TO REPLACE ALL FLAP TRACKS.FLAP TRACK PNS: 2622075-4 , 2622075-5,2622075-6

RIGHT FLAP MIDDLE FLAP TRACK HAS SEVERE CORROSION INBOARD SIDE. REMOVED AND REPLACED RIGHT FLAP MIDDLE FLAP TRACK IN REFERENCE TO C208 SRM 51-40-00.

WHEN CONDUCTING A ROUTINE APPROVED MODIFICATION OF THE RIGHT FLAP WE FOUND THAT THERE WAS A CRACK IN THE AFT INBOARD SPAR (P/N 2625005-18 AT THE BEND RADIUS BETWEEN WS68 AND WS53.5. THE AIRCRAFT HAS A TOTAL TIME OF 3700 HOURS ON IT WHEN THE CRACK WAS DISCOVERED. WE SUBMITTED A SIMILAR M/D REPORT WITH AN INCIDENT DATE OF 04/26/18 AND THE OPINIONS PUT FORTH IN THAT ON HOLD TRUE. THE SKIN AD RIBS IN THIS AREA SHOULD BE MADE OF A THICKER ALUMINUM AND THE RIBS MAY NEED TO MIRROR THE FRONT SPAR IN NUMBER.

Parts most often named Coupling (18) · Pump (12) · Spline (8) · Drive Shaft (1)

(CAN) FUEL PUMP LEAKING FUEL INTERNALLY. NOTED FUEL IN FUEL PUMP DRIVE DRAIN. AIRCRAFT GROUNDED UNTIL ARGOTECH PUMP AND REPLACEMENT FCU ARRIVE.

(CAN) DURING TAKEOFF THE ENGINE HAD A LOSS OF TORQUE FROM 1800FT.LBS TO 1000FT.LBS APPROXIMATELY. THEN THE PILOT CONTINUE WITH THE MANEUVERS AND LANDED WITHOUT INCIDENT. DURING REPLACEMENT OF THE FCU AND FUEL, THE MAINTENANCE CREW FOUND THAT THE COUPLING BETWEEN THE FCU AND FUEL PUMP WAS WORN AND BROKEN IN 2 PIECES, 1 BROKEN PIECE WAS STILL INSIDE OF THE FUEL PUMP AND THE OTHER ATTACHED IN THE SPLINES OF THE DRIVESHAFT OF THE FCU. TT FCU 5543.7 HRS. AND THE FUEL PUMP 5239.3 HRS.

DURING ROUTINE FUEL PUMP GARLOC SEAL REPLACEMENT FOR LEAKAGE, THE MECHANIC INSPECTED THE FUEL PUMP DRIVE GEAR AND IT BECAME DECOUPLED FROM THE FUEL PUMP. THIS IS NOT NORMAL FOR THIS MODEL PUMP. THE ACCESSORY DRIVE GEAR IS HOLLOW AND HAD THE FUEL PUMP DRIVE MIGRATED FORWARD AND DECOUPLED FROM THE PUMP, THE FCU WOULD HAVE LOST REFERENCE AND CAUSED AN INFLIGHT SHUTDOWN. INSPECTION OF THE DRIVE GEAR APPEARS THE RETAINER IS DEFORMED AND INEFFECTIVE.

Parts most often named Screw (9) · Cylinder (6) · Beta Rod (4) · Propeller (4)

DURING PREFLIGHT, DISCOVERED THAT THE CARBON BLOCK WHICH RIDES IN THE CHANNEL OF THE PROPELLER BETA FEEDBACK COLLAR WAS DAMAGED BY A SMALL FAILURE OF THE SECTION OF THE FEEDBACK COLLAR CHANNEL WALL DIRECTLY UNDER ONE OF THE MOUNTING STUDS. ONE POSSIBILTY THAT HAS BEEN SEEN PREVIOUSLY, IF TOO MUCH THREADLOCKER IS USED OR IF PREVIOUS RESIDUAL THREADLOCKER WAS NOT REMOVED, HYDRAULIC PRESSURE COULD RESULT IN DAMAGE TO THE COLLAR WALL WHEN STUD IS INSTALLED. IT SHOULD BE NOTED THAT THIS PROPELLER WAS IN STORAGE.

FLIGHT 7778, ENROUTE, THE PILOT ENCOUNTERED ENGINE OIL SPRAYING ONTO THE WINDSHIELD. THE PILOT ELECTED TO DIVERT. LANDED WITHOUT INCIDENT. NO EMERGENCY. MAINTENANCE REMOVED PROPELLER, REPLACED THE PROP SHAFT SEAL AND O-RING. REINSTALLED PROPELLER. AIRCRAFT RETURNED TO [S/N removed].

DURING TAXI, THE ENGINE SHOWED HIGH VIBRATIONS. PILOT SHUTDOWN THE ENGINE. INSPECTION FOUND ENGINE PROPELLER WITH A LOOSE BOLT, CAUSING THE BLADE ANGLE TO CHANGE, WHICH CREATED IMBALANCE. ENGINEERING RECOMMENDED TO REMOVE POWER SECTION FOR INSPECTION & REPAIR, AS THE ENGINE SUFFERED VIBRATION.

Parts most often named Fuel Control (19) · Fcu (10) · Bellows (2) · Bearing Cage (1)

PILOT NOTICED AFTER DESCENT TO FLIGHT LEVEL 1500 FEET, LEVELING OFF AND ADDING POWER, TORQUE INDICATION DROPPED 200 AND RECOVERED ON ITS OWN WITH NO INPUT TO THE POWER LEVER. AFTER DISCUSSION WITH PRATT AND WHITTNEY, IT WAS DETERMINED THAT THE FUEL CONTROL DESCENT BELLOWS WAS THE ISSUE.

LOSS OF ENGINE THROTTLE RESPONSE FOLLOWED BY AN UNCOMMANDED ENGINE SHUTDOWN ON THE TAXIWAY PRIOR TO TAKEOFF. THE AIRCRAFT FUEL SYSTEM WAS CHECK FOR CONTAMINATION WITH NO APPRECIABLE WATER OR DEBRIS FOUND IN WING TANKS OR RESERVOIR. FIREWALL FUEL FILTER ASSEMBLY VISUALLY CHECKED WITH NO APPRECIABLE CONTAMINATION IN THE SCREEN AND THE FILTER BYPASS INDICATOR FOUND IN THE NORMAL POSITION. ENGINE DRIVEN FUEL PUMP INLET SCREEN AND MAIN FILTER CHECKED WITH NO APPRECIABLE CONTAMINATION NOTED.

JUST AFTER SHUTDOWN THE PILOT NOTICED SMOKE COMING FROM THE THE RIGHT SIDE OF THE AIRCRAFT, FOLLOWED BY FLAME ABOVE THE COPILOT WINDOW. THE PILOT EXITED THE COCKPIT AND CONTACTED EMERGENCY [S/N removed]. THE PILOT CALLED DISPATCH AND WAS TRANSFERRED TO MAINTENANCE CONTROL. MAINTENANCE WAS NOTIFIED AND PEFORMED A BORESCOPE INSPECTION AND ADJUSTED THE RIGGING ON THE CONDITION LEVER. AFTER SEVERAL ENGINE RUNS THE AIRCRAFT WAS RETURNED TO [S/N removed].

Parts most often named Master Cylinder (26) · Shaft (2) · Nut (1) · Caliper (1)

LEFT HAND BRAKE INEFFECTIVE. MAINTENANCE REPLACED LEFT HAND MASTER CYLINDER. PERFORMED HIGH SPEED TAXI. OPS CHECKED GOOD

LEFT BRAKE PEDAL DID NOT PROPERLY ACTUATE BRAKES. PEDAL WAS SOFT AND APPLIED LITTLE TO NO BRAKING ACTION ON LEFT BRAKE. CORRECTIVE ACTION. JAM NUT ON HYDRAULIC ELBOW TO BRAKE MASTER CYLINDER LOOSE. TIGHTEN JAM NUT TO ELBOW. NO LEAKS NOTED ON BRAKE MASTER CYLINDER. WORK COMPLIED WITH BY CESSNA C208B CHAPTER 32-41-00 AND 32-40-00.

FLIGHT 7770, LEFT BRAKE HAD NO BRAKING ACTION, PEDAL GOES TO THE FLOOR. MAINTENANCE REPLACED THE BRAKE MASTER CYLINDER. OPS AND LEAK CHECKED GOOD.

Parts most often named Unknown (26) · Odor (2) · Hose (1) · Shutoff Valve (1)

"WHEN BLEED AIR IS TURNED ON, SMOKE ENTERS COCKPIT." "INSPECTED, NO SMOKE WAS OBSERVED COMING FROM THE ENGINE COMPARTMENT." CAUSE SUSPECTED TO BE DIRT/DUST IN BLEED AIR HEAT/VENT DISTRIBUTION.

AFTER TAKEOFF ROLL AT FEET AGL, THE CREW NOTICED SMOKE COMING OUT OF PILOTS SIDE VENT. THERE WAS A STRONG SMELL AND SMOKE APPEARED BLACK. EMERGENCY DECLARED AND CREW MADE EMERGENCY LANDING BACK TO HNL.

DURING CRUISE FLIGHT, CA AND FO NOTICED A STRONG BURNING SMELL, LIKE BURNING RUBBER AND PLASTIC. FLIGHT WAS DIVERTED AND MADE AN UNSCHEDULED LANDING. MAINTENANCE WAS DISPATCH AND PERFORMED THE INSPECTION WITH NO DEFECTS NOTED AND A GROUND PERFORMANCE RUN. NO SMELL WAS NOTED DURING THE GROUND RUN. THE AIRCRAFT THEN DID A MAINTENANCE CHECK FLIGHT, WHICH WAS SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO [S/N removed].

Parts most often named Fire Loop (8) · Fire Warning (7) · Switch (5) · Control Box (4)

ENGINE FIRE ANNUNCIATION AND AURAL ALERT IN CRUISE & ETM EXCEED (PROP & NG EXCEED). WAS FALSE INDICATIONS. INSPECTED SYSTEMS AND NO FINDINGS NOTED.

RED ENGINE FIRE ANNUNCIATOR CAME ON FOUR TIMES IN FLIGHT WITH AURAL WARNING. MAINTENANCE REPLACED BROKEN FIRE DETECTION LOOP

ENGING FIRE WARNING AND ANNUCIATOR ACTIVATED AFTER TAKE OFF, STAYED ON DURING LANDING AND TAXI. NO VISIBLE SIGNS OF FIRE NOTED.