N518MC
Registered owner: PASCO COUNTY MOSQUITO CONTROL DISTRICT, FL (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
No operator established for this aircraft.
Accident & incident history
No NTSB accidents or incidents on file for this aircraft.
Maintenance disclosures
Service Difficulty Reports filed with the FAA for this airframe. Filing is largely voluntary — the number of reports is not a measure of reliability. To verify a report, search its control number at the FAA SDRS site.
13 reports on file, 1998-02-10 – 2004-06-16.
Part: FUEL FILTER — CONTAMINATED (NR 1 ENGINE)
NR 1 ENGINE FAILED DURING CRUISE, FLIGHT LEVEL 350, .84 MACH, NORMAL FLIGHT. FOLLOWED PROCEDURES AND ATTEMPTED TO RESTART ENGINE WITH NO SUCCESS. ACCOMPLISHED ENGINE INLET AND EXHAUST INSPECTION ALL NORMAL. REPLACED NR 1 ENGINE FUEL FILTER IAW MM, LEAK CHECK, OK. ON ENGINE RUN UP, CHECKED CDP TUBES, TUBE DRAIN, HOLES, AND MEC CDP PORT FOUND ALL OK. ACCOMPLISHED MPA ENGINE RUN IAW MM. , THES NR 5, ALL PARAMETERS NORMAL.
Part: PANEL — LOOSE (DOOR LATCH)
MXP/BOM ATB DUE TO SIDE CARGO DOOR OPEN LIGHT ON: SIDE CARGO DOOR OPEN LIGHT CAME ON DURING TAKEOFF AND REMAINED ON AFTER TAKEOFF. FOUND SECURING PANEL ON LATCH DOOR MECHANISM WITH LOOSE SCREWS. TIGHTENED SCREWS, EXERCISED DOOR AND CHECKED OPERATION, FOUND NORMAL. PERFORMED PRESSURIZATION CHECK IAW MM 21-31-00, ALL NORMAL. AIRCRAFT WAS DEPRESSURIZED AND FUEL DUMPED PRIOR TO LANDING.
Part: ODOR — DETECTED (COCKPIT)
AFTER LANDING, STRONG FUEL ODOR IN THE COCKPIT, BALLAST FUEL 5000 AND TWO PACKS RUNNING. PERFORMED THOROUGH VISUAL CHECK OF AIR CONDITIONING BAY AND WING BODY FAIRING AREA PER MM 28-11-00. NO FUEL LEAKS NOTED. RAN PACK, NO FUEL ODOR NOTED. (M)
Earlier reports · 1998–2003 · 10 reports
2003
Part: SEAL — WORN (LT MLG WW)
DFW/ANC AIR TURNBACK, AT FL 31 CABIN ALT WENT TO 10 WITH DIFFERENTIAL AT 6.8 AND UNABLE TO PREVENT CABIN FROM CLIMBING 50-100 FPM. AIRCRAFT DESCENDED TO FL 29.0 THEN FL 25.0. MAX DIFFERENTIAL THAT COULD BE HELD WAS 6.5 AND CABIN CONTINUED TO CLIMB 50-100 FPM. BOTH OUTFLOW VALVES WERE FULLY CLOSED IN BOTH AUTO AND MANUAL. NO FUEL DUMPED. FOUND SUBSTANTIAL AIR LEAK LEFT WHEEL WELL PNEUMATIC DUCT AT 2 CLAMPS. REPLACED SEALS AT BOTH CLAMPS IAW MM 36-11-01. PRESSURIZED SYSTEM AND OPS NORMAL. AS PRECAUTION CHECKED A/C FOR LEAKS DURING PRESSURIZATION. NONE FOUND. ALL CHECKS NORMAL. (M)
Part: CONNECTOR — LOOSE (NR 4 ENGINE)
DURING CRUISE, NR 4 ENGINE NACELLE TEMP INDICATOR SHOWED 5.9. STARTED FLUCTUATING TO 6.5, EVENTUALLY READING 7.0. ACCOMPLISHED ABNORMAL PROCEDURES IAW 3.26.10. AIRCRAFT DIVERTED. NO FUEL DUMPED. TROUBLESHOOTING FOUND 1 CONNECTOR LOOSE ON LT LOWER DETECTOR AFT (B) LOOP, UPPER FORWARD DETECTOR RT (A) LOOP. 2 EACH GROMMET RIVETS MISSING FROM LT LOWER DETECTOR AT 7 O`CLOCK. 3 HOT AIR LEAKING TRACES FROM 15TH STAGE TO HPT COOLING AIR MANIFOLD CLAMPS AT 5 AND 6 OCLOCK. CLEANED CONNECTORS AND RESECURED AND SECURED LOOP GROMMET TO THE TUBE. RETIGHTENED CLAMPS. FIRE SYSTEM TEST NORMAL. INDICATION NORMAL WITH ENGINE RUN IAW 26-11-00.
Part: ENGINE — INOPERATIVE (NR 3)
DURING CLIMB OUT AT APPROXIMATELY 18,800 FT, NR 3 ENGINE HAD THREE LOUD BANGS. WHEN THROTTLE WAS RETARDED BANGS STOPPED. THRUST LEVER REMAINED AT IDLE FOR REMAINDER OF THE FLIGHT. THE ONLY INDICATION NOTICED WAS THAT THE N1 WAS AROUND 76 PERCENT AT ONE POINT. CHANGE ENGINE IAW MM. POWERPLANT REMOVAL/INSTALLATION.
2002
Part: BATTERY — OVERHEATED (MAIN)
DURING PREFLIGHT, THERE WAS STRONG BURNING SMELL IN COCKPIT. TROUBLESHOT, NR 3 ACM MAKING A NOISE, DEFERRED. DURING CRUISE AFTER 2.5 HOURS OF FLIGHT, BURNING ODOR RETURNED IN COCKPIT. AFTER SEARCHING FOR SOURCE IT WAS NOTICED NR 1 GEN KVAR/KW METER WAS READING -10KW+/-15KVR. ELECTED TO TURN GEN OFF BY TRIPPING FIELD, ODOR DISSIPATED AND DID NOT RETURN. ALL CSD LIGHTS ON MAIN GEN ANNUNCIATOR PANEL WERE ON . AFTER 6 HRS AND 43 MINUTES THERE WAS A LOUD SQUEALING SOUND UNDER F/E PANEL AND STRONG ODOR AGAIN. BATTERY VOLTAGE DROPPED 30V-25V. PULLED C/B FOR BATTERY CHARGER. C/A: BAD SMELL COMING FROM OVERHEATED BATTERY. BATTERY SMOLDERING DURING CHARGE. REMOVED AND REPLACED MAIN BATTERY, OPS CHECKED GOOD.
Part: INDICATOR — STOPPED (AIR SPEED IND)
AIR TURN BACK: F/OS AIR SPEED INDICATOR STOPPED AT 138 KTS. MACH OK. ALL OTHER FLIGHT INDICATONS OK. SWITCHED TO ALTERNATE STATIC-NO HELP. RETURNED TO ORD. C/A: REPLACED F/OS AIR SPEED INDICATOR AND ACCOMPLISHED FULL PITOT STATIC CHECK WITH 500 TESTER. CHECKS OK PER MM. MAINTENANCE ALSO ACCOMPLISHED CONDITIONAL OVER WEIGHT LANDING INSPECTION PER MM. NO DISCREPANCIED NOTED.
2001
Part: FITTING — CRACKED (NR 4 PYLON)
DURING INSPECTION, FOUND THE NR 4 PYLON STRUT TO DIAGONAL BRACE FITTING WITH ONE SHEARED FASTENER. OVERSIZED HOLE, HFEC OF OVERSIZED HOLE INDICATED A DEFECT IN THE ATTACH FITTING. REMOVED PYLON, REMOVED FITTING, FOUND RADIUS FILLER NOT INSTALLED. PERFORMED HFEC OPEN HOLE INSPECTION FOR ADDITIONAL CRACKING. NO CRACKS FOUND. INSTALLED NEW FITTING AND SEAL BACK-UP PLATE IAW SB747-54A2208 AND 747-54A2196. REINSTALLED PYLON. (M)
Part: FITTING — CRACKED (NR 1 PYLON)
DURING INSPECTION, FOUND THE NR 1 PYLON STRUT TO DIAGONAL BRACE FITTING CRACKED IN THE COMMON RADIUS OF THE HORIZONTAL TO VERTICAL SUPPORT FLANGE ALONG WITH ONE SHEARED FASTENER. REMOVED PYLON, REMOVED FITTING, FOUND RADIUS FILLER NOT INSTALLED. PERFORMED HFEC OPEN HOLE INSPECTION FOR ADDITIONAL CRACKING. NO CRACKS FOUND. INSTALLED NEW FITTING AND SEAL BACK UP PLATE IAW SB747-54A2208 AND 747-54A2196. REINSTALLED PYLON. (M)
2000
Part: FRAME — CRACKED (FUSELAGE)
DURING A CHECK, FOUND FUSELAGE FRAME STATION 1760 CRACKED AT APPROX WL 250R ON MAIN DECK. FRAME CRACK STOP DRILLED AND REPAIR DOUBLERS INSTALLED PER SRM 51-10-04. (M)
1999
Part: FIRE DETECTOR — MALFUNCTIONED (APU BAY)
APU FIRE WARNING CAME ON SEVERAL TIMES. DISCHARGED BOTTLE AS PRECAUTION. MAINTENANCE AT ANC INSPECTED APU COMPARTMENT, NO DAMAGE OR FIRE NOTED. PLEASE NOTE, APU PREVIOUSLY DEFERRED DUE WILL NOT ACCELERATE ABOVE 60 PERCENT. APU FIRE WARNING SYSTEM DEFERRED TO MAINTENANCE CHECK AT AMS ON 1-4-98, AT WHICH TIME THE APU WILL ALSO BE REPLACED. DURING C-CHECK, APU AND FIRE BOTTLES WERE REPLACED AND APU FIRE DETECTION SYSTEM WAS CHECKED AND FOUND SATISFACTORY PER MM 26-15-00. (X)
1998
Part: ENGINE — FAILED (NR 3)
ATB - FLT C1315 - ANC/TPE - NR 3 ENGINE FAILURE (FLAMEOUT) DURING CRUISE, FL 290, .84M..ENGINE VIBRATION NORMAL. ACCOMPLISHED ENGINE FAILURE SHUTDOWN CHECKLIST. AFTER CHECKLIST, N1 = 26.8, N2 = 0, F/F = 100, OIL PRESSURE = 0. FUEL DUMPED AND RETURNED TO ANC. DURING T/S, FOUND NR 3 ENGINE N2 INDICATION JUMP FROM ZERO TO 50 PERCENT AND LOUD CLUNKING SOUND HEARD COMING FROM THE CORE OF THE ENGINE. B-SUMP SCAVENGER INLET SCREEN HAS SEVERAL LARGE PIECES OF METAL. OTHER INLET SCREENS AND MAIN OIL SCREEN HAVE METALLIC PARTICLES. ENG REPLACED, S/N ON 517506. ENGINE OPERATION SATISFACTORY. (X)