N644NW
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.
47 reports on file, 2000-12-07 – 2010-11-27.
Part: SEAT TRACK — WORN (FUSELAGE) · airframe 76,409 hrs · 14,123 cycles
MAIN DECK SEAT TRACK LOBES ARE WORN AT LBL 34, BS 1660.
Part: LIGHT — INOPERATIVE (CABIN) · airframe 76,409 hrs · 14,123 cycles
MAIN DECK EMERGENCY LIGHT AT L-1 DOOR HAS LOW VOLTAGE.
Part: LIGHT — INOPERATIVE (CABIN) · airframe 76,409 hrs · 14,123 cycles
UPPER DECK EMERGENCY LIGHT AT STA 500 TOP OF STAIRS HAS LOW VOLTAGE.
Part: BATTERY PACK — DISCHARGED (CABIN) · airframe 76,409 hrs · 14,123 cycles
UPPER DECK EMERGENCY LIGHT BATTERY PACK AT ESCAPE DOOR HAS LOW VOLTAGE.
Part: LIGHT — INOPERATIVE (CABIN) · airframe 76,409 hrs · 14,123 cycles
MAIN DECK EMERGENCY LIGHT STA 500 LBL 83 HAS LOW VOLTAGE.
Part: LIGHT — INOPERATIVE (CABIN) · airframe 76,409 hrs · 14,123 cycles
UPPER DECK EMERGENCY LIGHT AT ESCAPE DOOR HAS LOW VOLTAGE.
Part: BATTERY PACK — DISCHARGED (CABIN) · airframe 76,409 hrs · 14,123 cycles
UPPER DECK EMERGENCY LIGHT BATTERY PACK AT UPPER DECK LAVATORY HAS LOW VOLTAGE.
Part: TRUNNION — CORRODED (RT BLG) · corrosion level 2 · airframe 76,409 hrs · 14,123 cycles
CORROSION ON RT BLG O/B TRUNNION SUPPORT, FWD UPPER BOLT HOLE SEATING SURFACE.
Part: TRUNNION — CORRODED (RT BLG) · corrosion level 2 · airframe 76,409 hrs · 14,123 cycles
CORROSION ON RT BLG I/B TRUNNION SUPPORT AROUND UPPER SURFACE OF BOLT HOLES.
Part: TRUNNION — CORRODED (LT BODY MLG) · corrosion level 2 · airframe 76,409 hrs · 14,123 cycles
LT BODY MLG I/B TRUNNION FITTING IS CORRODED IN AND AROUND BOLT HOLES.
Part: RIB — CRACKED (LT WING) · airframe 76,409 hrs · 14,123 cycles
LT WING RIB CRACKED FROM BOLT HOLE AT WS 1516.6, STR 8.
Part: FRAME — CORRODED (FUSELAGE) · corrosion level 2 · airframe 76,409 hrs · 14,123 cycles
STA 580 LBL 114 FRAME UPPER CHORD HAS CORROSION.
Part: SEAT TRACK — WORN (FUSELAGE) · airframe 76,409 hrs · 14,123 cycles
SEAT TRACK LOBES WORN RBL 79 BS 1850.
Part: SEAT TRACK — WORN (FUSELAGE) · airframe 76,409 hrs · 14,123 cycles
SEAT TRACK LOBES WORN AT STA 1900 RBL 34.
Part: STIFFENER — CRACKED (FUSELAGE) · airframe 76,409 hrs · 14,123 cycles
STIFFENER CRACKED .5 INCH AT STA 420 LBL 16 AFT SIDE OF FLOORBEAM.
Part: STRINGER — CRACKED (FUSELAGE) · airframe 76,409 hrs · 14,123 cycles
FWD PIT STA-660 STR-33R IS CRACKED .5 INCH.
Part: DOOR — CORRODED (L1) · corrosion level 2 · airframe 76,409 hrs · 14,123 cycles
L-1 DOOR FWD LOWER CORNER INTERIOR HAS CORROSION.
Part: STIFFENER — CRACKED (FUSELAGE) · airframe 76,409 hrs · 14,123 cycles
STIFFENER CRACKED .250 INCH AT STA 420 LBL 24 AFT SIDE OF FLOORBEAM.
Part: SHEAR WEB — CORRODED (FUSELAGE) · corrosion level 2 · airframe 76,409 hrs · 14,123 cycles
FWD PIT STA-564 LBL-128 MAIN DECK FLOOR TO SKIN SHEAR WEB CORRODED.
Part: STRUCTURE — CORRODED (L1 DOOR) · corrosion level 2 · airframe 76,409 hrs · 14,123 cycles
L-1 DOOR FWD LOWER CORNER INTERIOR HAS CORROSION.
Part: FRAME — CRACKED (FUSELAGE) · airframe 76,409 hrs · 14,123 cycles
BS 2669 RBL 32 WL 305 INNER CHORD OF FRAME CRACKED .5 INCH.
Part: STIFFENER — CRACKED (FUSELAGE) · airframe 76,409 hrs · 14,123 cycles
STIFFENER CRACKED .250 INCH AT STA 420 LBL 8 AFT SIDE OF FLOORBEAM.
Part: SEAT TRACK — CORRODED (FUSELAGE) · corrosion level 2 · airframe 76,409 hrs · 14,123 cycles
AFT PIT STA 1502 RBL 25 SEAT TRACK HAS CORROSION.
Part: FIRESHIELD — TORN (NR 1 PYLON) · airframe 76,409 hrs · 24,177 cycles
NR 1 PYLON I/B FIRESHIELD STRIP TORN .5 INCH JUST FWD OF HALFMOON CUTOUT NAC STA 235.
Part: FIRESHIELD — WORN (NR 1 PYLON) · airframe 76,409 hrs · 14,123 cycles
NR 1 PYLON I/B FIRESHIELD STRIP WORN AFT OF HALFMOON CUTOUT AT NAC STA 242.
Part: FIRESHIELD — WORN (NR 1 PYLON) · airframe 76,409 hrs · 14,123 cycles
NR 1 PYLON O/B FIRESHIELD STRIP WORN AFT OF HALFMOON AT STA 242.
Earlier reports · 2000–2007 · 21 reports
2007
Part: FRAME — CRACKED (NR 3 PYLON) · airframe 69,320 hrs · 12,718 cycles
DURING "M" CHECK, FOUND CRACKS IN NR 3 PYLON FRAME AND STIFFENER AT NAC STA 210 AND CUT OUT SKIN AT ACCESS PANEL 473 CL. REPAIRED PER EA 67-209239.
Part: SKIN — CRACKED (NR 4 PYLON) · airframe 69,320 hrs · 12,718 cycles
DURING "M" CHECK, FOUND CRACKS IN NR 4 PYLON SKIN AND STIFFENER AT NAC STA 218 AND ACCESS PANEL 483CL CUTOUT. REPAIRED PER EA 67-209238.
Part: FRAME — CRACKED (BS 2120 S25-26R) · airframe 69,320 hrs · 12,718 cycles
DURING "M" CHECK, FOUND CRACK IN FRAME AT BS 2120 S25R AND S26R. REPAIRED PER EA 67-208996.
Part: TENSION TIE — DEFORMED (BS 900) · airframe 69,320 hrs · 12,718 cycles
DURING "M" CHECK, FOUND TENSION TIE FORWARD CHANNEL DEFORMED AT BS 900 RT. REPAIRED PER EA 67-208991.
Part: TENSION TIE — CRACKED (BS 880) · airframe 69,320 hrs · 12,718 cycles
DURING "M" CHECK, FOUND CRACKS IN TENSION TIE CHANNEL FASTENER HOLES AT BS 880 LT AND RT. REPAIRED PER EA 67-208995.
Part: TENSION TIE — CRACKED (BS 800) · airframe 69,320 hrs · 12,718 cycles
DURING "M" CHECK FOUND CRACKS IN TENSION TIE FORWARD AND AFT CHANNEL FASTENER HOLES AT BS 800 LT AND RT. REPAIRED PER EA 67-208990.
Part: FRAME — CRACKED (BS 820) · airframe 69,320 hrs · 12,718 cycles
DURING "M" CHECK, FOUND CRACKS IN FRAME FASTENER HOLES AT TENSION TIE AREA BS 820 LT AND RT. REPAIRED PER EA 67-208989.
Part: FLOORBEAM — CORRODED (BS 440) · corrosion level 2 · airframe 69,320 hrs · 12,718 cycles
DURING "M" CHECK, FOUND CORROSION ON UPPER DECK FLOORBEAM UPPER CHORD BS 440 LBL 76. REPAIRED PER EA 67-209236.
Part: FRAME — CRACKED (BS 840) · airframe 69,320 hrs · 12,718 cycles
DURING "M" CHECK FOUND CRACKS IN FASTENER HOLE FRAME WEB TENSION TIE AREA AT BS 840 LT AND RT. REPAIRED PER EA 67-208992.
Part: TENSION TIE — CRACKED (BS 860) · airframe 69,320 hrs · 12,718 cycles
DURING "M" CHECK, FOUND CRACKS IN TENSION TIE CHANNEL FASTENER HOLES AT BS 860 LT. REPAIRED PER EA 67-208993.
Part: FLOORBEAM — DAMAGED (BS 380) · airframe 69,320 hrs · 12,718 cycles
DURING "M" CHECK, FOUND SHORT EDGE MARGIN ON UPPER DECK FLOORBEAM REINFORCEMENT STRAPS AT BS 380 RT AND LT. ALSO, FOUND CRACK IN FLOORBEAM CHORD FASTENER HOLE AT BS 380 RBL 74. REPAIRED PER EA 67-208994.
2005
Part: HOSE — FAILED (NR 4 HYD SYSTEM) · airframe 63,915 hrs · 11,681 cycles
AFTER TAKEOFF, HAD A TOTAL LOSS OF NR 4 HYDRAULIC SYSTEM. COM WAS FOLLOWED, AN EMERGENCY WAS DECLARED WITH ATC AND RETURNED TO SIN, LANDING WAS UNEVENTFUL. FOUND LEFT HAND WING GEAR ACTUATOR UP FLEX LINE BROKEN AND REPLACED. REPLACED (EDP) ENGINE DRIVEN HYDRAULIC PUMP DUE TO A TOTAL LOSS OF HYD FLUID. NO CONTAMINATION WAS FOUND IN THE EDP AND ADF CASE DRAIN FILTERS. INSPECTION COMPLETED AND AIRCRAFT RETURNED TO SERVICE.
2003
Part: WEB — CRACKED · airframe 55,297 hrs · 9,979 cycles
During "H" check found crack in four frame webs on #1 pylon. Repaired per EA 67-165045.
Part: WEB — CRACKED · airframe 55,297 hrs · 9,979 cycles
During "H" check found cracks in frame webs of #3 pylon rear engine mount bulkhead. Repaired per EA 67-165041.
Part: WEB — CRACKED · airframe 55,297 hrs · 9,979 cycles
During "H" check found cracks in two fastener holes #37 & #39 at right and left wing upper mid spar web between MSS 387.99 & 417.20. Repaired per EA 67-165047.
Part: BULKHEAD — CRACKED · airframe 55,297 hrs · 9,979 cycles
During "H" check found crack in #4 pylon aft torque bulkhead chord at the top fastener hole common to the lower spar fitting. Repaired per EA 67-165046.
Part: WEB — CRACKED · airframe 55,297 hrs · 9,979 cycles
During "H" check found cracks in #4 pylon rear engine mount outboard forward and aft frame webs. Repaired per EA 67-165042.
Part: SKIN — CRACKED · airframe 55,297 hrs · 9,979 cycles
During "H" check found cracks in forward upper corner of aft cargo door cutout. Repaired per EA 67-165048.
2002
Part: ACTUATOR — MALFUNCTIONED (BLG DOOR) · airframe 53,960 hrs · 9,709 cycles
DURING CLIMB, THE LANDING GEAR DOOR OPEN LIGHT ILLUMINATED WITH THE LANDING GEAR HANDLE IN THE OFF POSITION. RECYCLED LANDING GEAR AND LIGHT WENT OUT BUT FLICKED ON/OFF FOR THE REMAINDER OF THE FLIGHT. AIRCRAFT CONTINUED TO DESTINATION AND LANDED WITHOUT INCIDENT. REPLACED THE BODY LANDING GEAR DOOR ACTUATOR. OPERATIONAL CHECK GOOD.
2001
Part: WINDOW FRAME — CORRODED (FUSELAGE) · corrosion level 2 · airframe 49,030 hrs · 8,713 cycles
ON CLIMBOUT AT 9000 FT LOUD HISSING NOISE FROM AROUND FLIGHT COMPARTMENT WINDOW 3R. FLIGHT CONTINUED UNEVENTFULLY TO DESTINATION. MAINTENANCE PERFORMED INSPECTION OF 3R WINDOW AND FOUND INTERGRANNULAR CORROSION ON BOTTOM CORNER SILL. MAINTENANCE PERFORMED REPAIR OF LOWER SILL AND SURROUNDING AREA PER EA 67-180110 REV A. REFERENCE LOG PAGES 8723892, 1578798, 1578795, 1578796, 1578790 AND 8723890.
2000
Part: HYD LINE — LEAKING (NBR 1 ADP) · airframe 48,166 hrs · 8,547 cycles
DURING LANDING, AIRCRAFT LOST HYDRAULIC FLUID IN THE NBR 1 SYSTEM. AIRCRAFT WAS TOWED FROM RUNWAY WITHOUT INCIDENT. REPLACED THE AIR DRIVEN PUMP HYDRAULIC PRESSURE LINE. OPERATIONAL CHECK GOOD.\N\NMFGR: BOEING\NMODEL: 747212F