N7644U
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| UNITED AIRLINES, INC. (CALA) | Operator | on 1971-02-15 | Operator named in NTSB report |
Accident & incident history
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.
21 reports on file, 1999-11-19 – 2005-12-30.
Part: SEQUENCE VALVE — INTERMITTENT (RT WHEEL WELL)
DURING APPROACH, RT MLG AND NOSE GEAR INDICATION SHOWED UNSAFE. ON SECOND ATTEMPT GEARS CAME DOWN NORMALLY. ON GEAR OPERATIONAL CHECK RT MLG FAILED TO EXTEND, NOSE GEAR OPERATION NORMAL. REMOVED AND REPLACED RT MLG DOOR SEQUENCE VALVE. SYSTEM OPERATIONAL CHECKS GOOD MM. (K)
Earlier reports · 1999–2004 · 20 reports
2004
Part: ACCESSORY UNIT — INOPERATIVE (ELECTRONIC BAY)
RED LT GEAR, RT GEAR, NOSE GEAR AND AMBER TAIL SKID LIGHTS ON PILOTS FRONT PANEL REMAINED ILLUMINATED AFTER GEAR HANDLE WAS RAISED ON TAKEOFF. FLIGHT ENGINEERS ANNUNCIATOR LIGHTS REMAINED OUT. REMOVED AND REPLACED LANDING GEAR ACCESSORY BOX IAW MM. OPS CHECK NORMAL IAW MM.
2003
Part: HELICOIL — DAMAGED (OIL FILTER)
DURING CRUISE, ENGINE NR 3 LOST ALL OIL PRESSURE AND ALL OIL QUANTITY. PERFORMED NR 3 ENGINE INFLIGHT SHUTDOWN CHECKLIST. DIVERTED TO STL. EMERGENCY DECLARED. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. REMOVED AND REPLACED HELICOIL AT OIL FILTER BYPASS UNION TO ACCESSORY GEARBOX. (M)
Part: FLAP — MALADJUSTMENT (LT & RT WINGS)
AFTER TAKEOFF, ACCELRATED TO 300 KNOTS. CREW EXPERIENCED MODERATE VIBRATION. AIRCRAFT RETURNED TO DEPARTURE AIRPORT. ADJUSTED LT AND RT AFT FLAPS. REMOVED AND REPLACED AILERON HINGE SUPPORT FITTING.
Part: SMOKE DETECTOR — FALSE ACTIVATION (CARGO BAY)
AC DEPARTED, ENROUTE, MAIN CARGO COMPARTMENT SMOKE DETECTOR LIGHT ILLUMINATED. AC DIVERTED WITHOUT INCIDENT. INSPECTED AC FOR EVIDENCE OF BURNED WIRES AND FLUIDS. NO EVIDENCE FOUND. INSPECTED CARGO SMOKE DETECTORS AND PERFORMED FUNCTIONAL TEST OF CARGO SMOKE DETECTION SYS. SYSTEM OPERATIONAL CHECKED GOOD.
2002
Part: DOUBLER — CRACKED (FUSELAGE)
AT C-CHECK, FOUND PREVIOUS REPAIR WITH SEVERAL CRACKS AT MAIN CARGO, STATION 400-420 BL 0.0. (M)
Part: SHEAR TIE — CRACKED (FUSELAGE)
AT C-CHECK, FOUND CABIN SHEAR TIE CLIP CRACKED AT BS 970 STRINGER 4R. (M)
Part: STRINGER CLIP — CRACKED (FUSELAGE)
AT C-CHECK, FOUND FUSELAGE UPPER LOBE STRINGER SHEAR CLIP, BS 950B STRINGER 9L, CRACKED. (M)
Part: SKIN — DAMAGED (HORIZ STAB)
AT C-CHECK, FOUND LEFT HORIZONTAL STABILIZER LOWER SKIN HAD 1 DENT WITH CREASE AND 1 DENT WITH CHERRY MAX RIVET IN CENTER OF DENT AT STABILIZER STATION 4 AND APPROXIMATELY 10 INCHES FORWARD AT STATION 14 IS 2 CREASES WITH A DENT AT DRAIN HOLE. (M)
Part: ATTACH FITTING — CRACKED (FUSELAGE)
AT C-CHECK, FOUND RIGHT LANDING GEAR SUPPORT BEAM OUTBOARD ATTACH FITTING CRACKED. (M)
Part: FITTING — CRACKED (FUSELAGE)
AT C-CHECK, FOUND CRACK IN TIE FITTING, INTERIOR STRUCTURE OF FUSELAGE, UPPER LOBE, FS 950E, STRINGER 4L. (M)
Part: FITTING — CRACKED (FUSELAGE)
AT C-CHECK, FOUND CRACK IN TIE FITTING, INTERIOR STRUCTURE OF FUSELAGE, UPPER LOBE, FS 950F STRINGER 4R. (M)
Part: FITTING — CRACKED (FUSELAGE)
AT C-CHECK, FOUND CRACK IN TIE FITTING, INTERIOR STRUCTURE OF FUSELAGE, UPPER LOBE, FS 1070 STRINGER 4L. (M)
Part: FITTING — CRACKED (FUSELAGE)
AT C-CHECK, FOUND CRACKS IN TIE FITTING, INTERIOR STRUCTURE OF FUSELAGE, UPPER LOBE, FS 1050 STRINGER 4L. (M)
Part: FITTING — CRACKED (FUSELAGE)
AT C-CHECK, FOUND CRACK IN TIE FITTING, INTERIOR STRUCTURE OF FUSELAGE, UPPER LOBE, FS 950F STRINGER 4L. (M)
Part: FITTING — CRACKED (FUSELAGE)
AT C-CHECK, FOUND CRACK IN TIE FITTING, INTERIOR STRUCTURE OF FUSELAGE, UPPER LOBE, FS 950 STRINGER 4R. (M)
Part: FITTING — CRACKED (FUSELAGE)
AT C-CHECK, FOUND CRACKS IN TIE FITTING, INTERIOR STRUCTURE OF FUSELAGE, UPPER LOBE, FS 950E STRINGER 4R. (M)
Part: ANGLE — CRACKED (FUSELAGE)
AT B-CHECK, DURING INSPECTION OF LOWER SILL BEAM, FOUND CRACK IN SUPPORT ANGLE EXTENDING FROM BOTTOM FASTENER HOLE, AT STATION 680. (M)
2000
Part: SMOKE DETECTOR — DAMAGED (CARGO BAY)
FLT 737 - BOS - RED LIGHT ILLUMINATED ON CARGO SMOKE DETECTION SYSTEM WITHOUT TESTING. NO SMOKE DETECTED BY SIGHT OR SMELL. FOUND METAL LINE ON FORWARD NR 1 SMOKE DETECTOR KINKED. REMOVED AND REPLACED FORWARD NR 1 SMOKE DETECTOR. (M)
Part: SMOKE DETECTOR — WILL NOT TEST (CABIN)
FLT 734 - IND - NR 1 SMOKE DETECTOR WOULD NOT TEST. REPLACED NR 1 SMOKE DETECTOR. (M)
1999
Part: TERMINAL — FAILED (BOOST PUMP)
FLT 216 - CVG - ON CLIMB-OUT FROM DAY, SMELLED ELECTRICAL SMOKE IN COCKPIT, AND SAW SLIGHT WHISP OF SMOKE FORM BEHIND LEFT OF FLIGHT ENGINEER PANEL. LANDED IN CVG. SMOKE SEEMED TO DISSIPATE PRIOR TO LANDING. FOUND SHORTED RING TERMINAL AT NR 2 FORWARD RIGHT BOOST PUMP ON/OFF SWITCH. REPAIRED WIRE. INSTALLED NEW TERMINAL. (M)