N7644U

No registry detail on file · not in current registry

Operators of this aircraft

Who operated this tail, and how firmly we know it.

OperatorRolePeriodBasis
UNITED AIRLINES, INC. (CALA)Operatoron 1971-02-15Operator named in NTSB report

Accident & incident history

Incident · 1971-02-15 Operator named in NTSB report
BOEING 727 No injuriesUNITED AIRLINES, INC.

Operated by UNITED AIR LINES INC (per NTSB report)

Source: NTSB case IAD71II039

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.

WARNING INDICATION · 2005-12-30 Unresolved
ATA 3230

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)

Source: SDR C7WA200500126
Earlier reports · 1999–2004 · 20 reports

2004

OTHER · 2004-08-31 Unresolved
ATA 3260

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.

Source: SDR C7WA2004000BB

2003

FLUID LOSS; WARNING INDICATION · 2003-11-05 Unresolved
ATA 7261

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)

Source: SDR 2004F00034
VIBRATION/BUFFET · 2003-09-03 Unresolved
ATA 5753

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.

Source: SDR RYN2004F00024
FALSE WARNING · 2003-09-03 Unresolved
ATA 2611

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.

Source: SDR RYN2004F00023

2002

OTHER · 2002-09-14 Unresolved
ATA 5320

Part: DOUBLER — CRACKED (FUSELAGE)

AT C-CHECK, FOUND PREVIOUS REPAIR WITH SEVERAL CRACKS AT MAIN CARGO, STATION 400-420 BL 0.0. (M)

Source: SDR 2002F01040
OTHER · 2002-09-14 Unresolved
ATA 5310

Part: SHEAR TIE — CRACKED (FUSELAGE)

AT C-CHECK, FOUND CABIN SHEAR TIE CLIP CRACKED AT BS 970 STRINGER 4R. (M)

Source: SDR 2002F01041
OTHER · 2002-09-14 Unresolved
ATA 5320

Part: STRINGER CLIP — CRACKED (FUSELAGE)

AT C-CHECK, FOUND FUSELAGE UPPER LOBE STRINGER SHEAR CLIP, BS 950B STRINGER 9L, CRACKED. (M)

Source: SDR 2002F01042
OTHER · 2002-09-13 Unresolved
ATA 5512

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)

Source: SDR 2002F01031
OTHER · 2002-09-13 Unresolved
ATA 5343

Part: ATTACH FITTING — CRACKED (FUSELAGE)

AT C-CHECK, FOUND RIGHT LANDING GEAR SUPPORT BEAM OUTBOARD ATTACH FITTING CRACKED. (M)

Source: SDR 2002F01032
OTHER · 2002-09-11 Unresolved
ATA 5320

Part: FITTING — CRACKED (FUSELAGE)

AT C-CHECK, FOUND CRACK IN TIE FITTING, INTERIOR STRUCTURE OF FUSELAGE, UPPER LOBE, FS 950E, STRINGER 4L. (M)

Source: SDR 2002F01035
OTHER · 2002-09-11 Unresolved
ATA 5320

Part: FITTING — CRACKED (FUSELAGE)

AT C-CHECK, FOUND CRACK IN TIE FITTING, INTERIOR STRUCTURE OF FUSELAGE, UPPER LOBE, FS 950F STRINGER 4R. (M)

Source: SDR 2002F01036
OTHER · 2002-09-11 Unresolved
ATA 5320

Part: FITTING — CRACKED (FUSELAGE)

AT C-CHECK, FOUND CRACK IN TIE FITTING, INTERIOR STRUCTURE OF FUSELAGE, UPPER LOBE, FS 1070 STRINGER 4L. (M)

Source: SDR 2002F01037
OTHER · 2002-09-11 Unresolved
ATA 5320

Part: FITTING — CRACKED (FUSELAGE)

AT C-CHECK, FOUND CRACKS IN TIE FITTING, INTERIOR STRUCTURE OF FUSELAGE, UPPER LOBE, FS 1050 STRINGER 4L. (M)

Source: SDR 2002F01038
OTHER · 2002-09-11 Unresolved
ATA 5320

Part: FITTING — CRACKED (FUSELAGE)

AT C-CHECK, FOUND CRACK IN TIE FITTING, INTERIOR STRUCTURE OF FUSELAGE, UPPER LOBE, FS 950F STRINGER 4L. (M)

Source: SDR 2002F01039
OTHER · 2002-09-11 Unresolved
ATA 5320

Part: FITTING — CRACKED (FUSELAGE)

AT C-CHECK, FOUND CRACK IN TIE FITTING, INTERIOR STRUCTURE OF FUSELAGE, UPPER LOBE, FS 950 STRINGER 4R. (M)

Source: SDR 2002F01033
OTHER · 2002-09-11 Unresolved
ATA 5320

Part: FITTING — CRACKED (FUSELAGE)

AT C-CHECK, FOUND CRACKS IN TIE FITTING, INTERIOR STRUCTURE OF FUSELAGE, UPPER LOBE, FS 950E STRINGER 4R. (M)

Source: SDR 2002F01034
OTHER · 2002-06-01 Unresolved
ATA 5320

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)

Source: SDR 2002F00870

2000

FALSE WARNING · 2000-08-16 Unresolved
ATA 2611

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)

Source: SDR 20001212AP001
NO TEST · 2000-08-05 Unresolved
ATA 2611

Part: SMOKE DETECTOR — WILL NOT TEST (CABIN)

FLT 734 - IND - NR 1 SMOKE DETECTOR WOULD NOT TEST. REPLACED NR 1 SMOKE DETECTOR. (M)

Source: SDR 20001129AP007

1999

SMOKE/FUMES/ODORS/SPARKS; WARNING INDICATION · 1999-11-19 Unresolved
ATA 2822

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)

Source: SDR 20000424AP043