N305UA

DRS TECHNOLOGIES SENTRY HP · Fixed-wing single-engine · 1 engine · 0 seats · Valid Registration

Registered owner: UNIV OF ALASKA FAIRBANKS GEOPHYSICAL INSTITUTE, AK (owner ≠ operator)

Operators of this aircraft

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

OperatorRolePeriodBasis
UNITED AIRLINES, INC. (CALA)Operatoron 1990-08-21Operator named in NTSB report

Accident & incident history

Boeing 737-322 No injuries Part 121operator not named in the NTSB record
Source: NTSB case DEN05IA076
Incident · 1990-08-21 Operator named in NTSB report
BOEING 737-322 No injuries Part 121UNITED AIRLINES, INC.

Operated by UNITED AIRLINES (per NTSB report)

Source: NTSB case LAX90IA293
BOEING 737-322 No injuries Part 121operator not named in the NTSB record
Source: NTSB case CHI88IA015

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.

39 reports on file, 1996-06-06 – 2008-06-21.

INADEQUATE Q C · 2008-06-21 Unresolved
ATA 3510

Part: OXYGEN MASK — LEAKING (CREW O2) · airframe 61,286 hrs · 35,958 cycles

CREW REPORT: F-O O2 MASK INFLATABLE HARNESS LEAKING - NOTE: OBSERVER AND CAPT MASKS ARE GOOD. SWAPPED FO'S MASK WITH FIRST OBS MASK. FO'S MASK CHKS OK PER MM35-12-86. FIRST OBS SEAT INOP. REPLACED FIRST OBS SEAT MASK REF MM 35-12-86. AC OK FOR SERVICE.

Source: SDR 2008UALA03515
OTHER · 2008-05-18 Unresolved
ATA 5311

Part: FRAME — DAMAGED (FUSELAGE) · airframe 61,071 hrs · 35,815 cycles

STA 294.5 FRAME AT STR 11L HAS TOOLING MARK. REPAIRED PER UA-EVA-71570 AND REO-L01074. THIS IS A TIME LIMITED REPAIR FOR 12 MONTHS. BOEING MUST ISSUE A NEW 8100-9 ON OR BEFORE 17MAY2009. RECEIVED FIRST STAGE APPROVAL.

Source: SDR UALA2008111302866
OTHER · 2008-05-18 Unresolved
ATA 5320

Part: STRAP — CRACKED (FUSELAGE) · airframe 61,071 hrs · 35,815 cycles

THE FOLLOWING CRACKS WERE AT VERTICAL STRAP STA 348 STR 16L, INTERCOSTAL CLIP STA 360 STR 11L, INTERCOSTAL CLIP STA 294.5 STR 11L AND INTERCOSTAL WEB STA 294.5 STR 11L.

Source: SDR 2008UALA02865
OTHER · 2008-05-18 Unresolved
ATA 5311

Part: FRAME — DAMAGED (FUSELAGE) · airframe 61,071 hrs · 35,815 cycles

STA 294.5 FRAME AT STR 11L HAS TOOLING MARK.

Source: SDR 2008UALA02866
OTHER · 2008-05-18 Unresolved
ATA 5320

Part: STRAP — CRACKED (FUSELAGE) · airframe 61,071 hrs · 35,815 cycles

THE FOLLOWING CRACKS WERE AT VERTICAL STRAP STA 348 STR 16L, INTERCOSTAL CLIP STA 360 STR 11L, INTERCOSTAL CLIP STA 294.5 STR 11L AND INTERCOSTAL WEB STA 294.5 STR 11L. MAJOR REPAIRS. REPAIRED PER UA-EVA-71568 AND UA-EVA-71569, REO'S L-01075 AND REO L-01074 TO BE REINSPECTED WITHIN 6000 CYCLES AND EVERY 6000 CYCLES THEREAFTER. CURRENT PTC 35815. RECEIVED 8100-9. PER SB 737-53A1204.

Source: SDR UALA2008111302865
OTHER · 2008-04-24 Unresolved
ATA 5310

Part: STRUCTURE — DAMAGED (BS 906 STR 26L) · airframe 60,954 hrs · 35,733 cycles

FOUND STA 906 STR 26L HAS DAMAGE. INSTALLED REPAIR AT STA 90 6 STR 26L.

Source: SDR 2008UALA02398
OTHER · 2008-04-22 Unresolved
ATA 5330

Part: SKIN — DAMAGED (BS 907 S26L) · airframe 69,054 hrs · 35,733 cycles

FOUND DAMAGED SKIN AT STA 907 STR 26L. MAJOR REPAIR ACCOMPLISHED: REMOVED DAMAGED SKIN. INSTALLED DOUBLER, TRIPLER & STRUCTURUAL FILLER REPAIR.

Source: SDR 2008UALA02366
OTHER · 2008-04-16 Unresolved
ATA 3510

Part: FITTING — LEAKING (OXYGEN MASK) · airframe 60,915 hrs · 35,707 cycles

CREW OXYGEN SYSTEM-LOW. RECORD PRESSURE PRIOR TO SERVICING. FOUND FIRST OBSERVERS O2 MASK LEAKING AT QUICK DISCONNECT FITTING, REPLACED MASK AND STOWED PER AMM 35-12-85 FOUND B-NUT LEAKING ON EXTERNAL FILL VLV. (B-NUT LOCATED INSIDE BOTTLE ACCESS PANEL) SECURED B-NUT LEAK CHECKED PER MM 35-12-00 501. SERVICED OXYGEN TO 1850 PSI. AC OK FOR SERVICE.

Source: SDR 2008UALA02253
OTHER · 2008-04-13 Unresolved
ATA 2565

Part: SLIDE — OUT OF POSITION (R1 DOOR) · airframe 60,901 hrs · 35,696 cycles

1R DOOR ESCAPE SLIDE SLID OUT OF CONTAINER. ACCOMPLISHED INSPECTION OF DOOR SLIDE INSTALLATION DOOR 1R SLIDE CHECKED NORMAL. AC OK FOR SERVICE.

Source: SDR 2008UALA02139
OTHER · 2008-03-27 Unresolved
ATA 5310

Part: PLATE — CRACKED (FUSELAGE) · airframe 60,749 hrs · 35,608 cycles

FLAP STAINLESS STEEL WEAR PLATE ON RIGHT FUSELAGE FAIRING AFT OF WHEEL WELL IS CRACKED APPROX 1.5 INCH AT FWD LOWER SECTION. REPLACED STAINLESS STEEL WEAR PLATE.

Source: SDR 2008UALA01725
INADEQUATE Q C · 2008-03-08 Unresolved
ATA 3510

Part: OXYGEN SYSTEM — LOW (CREW O2) · airframe 60,717 hrs · 35,590 cycles

CREW O2 LOW. SERVICED OXYGEN SYSTEM.

Source: SDR 2008UALA01308
FALSE WARNING · 2008-02-04 Unresolved
ATA 2611

Part: SMOKE DETECTOR — MALFUNCTIONED · airframe 60,515 hrs · 35,469 cycles

CARGO DETECTION SUPPRESSION PANEL FWD PIT FAIL LIGHTS ILLUMINATED. MODULE INDICATING BOTH B AND ONE A LOOP INOPERATIVE. REPLACED 1A AND 2B SMOKE DETECTORS.

Source: SDR 2008UALA00657
INADEQUATE Q C · 2008-01-31 Unresolved
ATA 2350

Part: MICROPHONE — INOPERATIVE (COCKPIT) · airframe 60,497 hrs · 35,459 cycles

FIRST OFFICER`S O2 MASK MICROPHONE INOP. REPLACED OXYGEN MASK.

Source: SDR 2008UALA00572
NO TEST · 2008-01-31 Unresolved
ATA 2350

Part: MICROPHONE — INOPERATIVE (COCKPIT) · airframe 60,501 hrs · 35,461 cycles

OBSERVER`S O2 MASK MICROPHONE INOP. SWAPPED TO FIRST OFFICERS POSITION PER MEL.

Source: SDR 2008UALA00573
Earlier reports · 1996–2007 · 25 reports

2007

WARNING INDICATION · 2007-11-09 Unresolved
ATA 3497

Part: CONNECTOR — BURNED (ADI) · airframe 59,879 hrs · 35,077 cycles

F/O ADI BENCH CONNECTOR D2425 PIN 7 IN BURNED. REPLACED EADI AND BENCH CONNECTOR.

Source: SDR 2007UALA04617
OTHER · 2007-09-28 Unresolved
ATA 5310

Part: DOOR FRAME — CRACKED (SERVICE DOORWAY) · airframe 59,590 hrs · 34,895 cycles

CABIN FWD GALLEY SERVICE ENTRY DOOR CUTOUT AFT LWR JAMB AREA CRACKED. MAJOR REPAIR ACCOMPLISHED: INSTALLED DOUBLER REPAIR.

Source: SDR 2007UALA03941
OTHER · 2007-09-25 Unresolved
ATA 5330

Part: SKIN — DENTED (FUSELAGE) · airframe 33,415 hrs · 19,968 cycles

RIGHT EXT FUSELAGE STA 320, 1-2 INCHES ABOVE STR 18R, ABOUT 10 INCHES BELOW FWD GALLEY DOOR, A .093" DEEP 2" WIDE DENT. MAJOR REPAIR: PERMANENT DOUBLER REPAIR INSTALLED.

Source: SDR 2007UALA03931
FLT CONT AFFECTED · 2007-09-11 Unresolved
ATA 2750

Part: FLAP — MALFUNCTIONED (WING) · airframe 59,559 hrs · 34,874 cycles

CREW COMMENTS: FLAPS STOPPED AT 27 DEGREES AND WOULD NOT MOVE MORE OR LESS. REPLACED FLAP INDICATOR UNIT. FLAP LOCKOUT OCCURRED BECAUSE THERE WAS A F LAP NEEDLE SPLIT, MOST LIKELY ENOUGH TO LOCK OUT FLAPS ASYMETRY.

Source: SDR 2007UALA03684
WARNING INDICATION · 2007-08-02 Unresolved
ATA 3297

Part: WIRE — SHORTED (RT MLG) · airframe 59,254 hrs · 34,690 cycles

RIGHT MAIN GEAR INDICATION FAULT. FOUND SHORTED WIRING IN THE INDICATION SYSTEM. FOUND UPPER LOCK SENSOR RED WIRE SHORTED- REPLACED BOTH UP LOCK AND DOWN LOCK INDICATION SENSORS. SWUNG GEAR- ALL INDICATIONS NORMAL.

Source: SDR 2007UALA02974
NO TEST · 2007-03-19 Unresolved
ATA 3350

Part: LIGHT — INOPERATIVE (CABIN) · airframe 58,207 hrs · 34,031 cycles

EEL LAMP INOP ROW 15. REPLACED EEL LAMP.

Source: SDR 2007UALA00821
NO TEST · 2007-03-19 Unresolved
ATA 3397

Part: CABLE — FAULTY (CABIN) · airframe 58,207 hrs · 34,031 cycles

EEL LIGHTS INOP AFT OF ROW 16. CLEANED LIQUID FROM EEL TRACK. REPLACED RIBBON CABLE.

Source: SDR 2007UALA00820
NO TEST · 2007-03-19 Unresolved
ATA 3350

Part: LIGHT — INOPERATIVE (CABIN) · airframe 58,207 hrs · 34,031 cycles

EMERGENCY SLIDE LIGHT INOP AT DOOR 1L. [SUP 4-17-07] RELAMPED.

Source: SDR 2007UALA00819
NO TEST · 2007-01-31 Unresolved
ATA 3350

Part: LIGHT — INOPERATIVE (CABIN) · airframe 57,834 hrs · 33,820 cycles

ROW 16 ON BACK, EMERGENCY EXIT LIGHTS DON'T WORK. REPLACED POWER STRIP.

Source: SDR 2007UALA00275

2006

INADEQUATE Q C; WARNING INDICATION · 2006-06-09 Unresolved
ATA 7261

Part: OIL SYSTEM — OBSTRUCTED (NR 1 ENGINE) · airframe 56,103 hrs · 32,759 cycles

NR 1 ENGINE SHUTDOWN DUE TO LOW OIL PRESSURE, LOW OIL QUANTITY AND HIGH OIL TEMPERATURE. THE CAUSE WAS A RED PROTECTION CAP HAD NOT BEEN REMOVED AND BECAME LODGED IN A SUCTION PORT OF THE SCAVENGE VALVE. SERVICED OIL AND REPLACED LUBRICATION UNIT.

Source: SDR 2006UALA01141
OTHER · 2006-03-27 Unresolved
ATA 3350

Part: POWER SUPPLY — INOPERATIVE (EMERGENCY LIGHT) · airframe 55,492 hrs · 32,392 cycles

FOUND EEL LIGHTS FROM ROW 3-9 INOP.

Source: SDR 2006UALA00594
OTHER · 2006-03-27 Unresolved
ATA 3350

Part: WIRE — DAMAGED (EMERGENCY LIGHT) · airframe 55,492 hrs · 32,392 cycles

EEL LIGHTS INOP FROM ROW 15 AFT TO AND INCLUDING EEL STRIP IN FRONT OF AFT GALLEY CART STOWAGE COMPARTMENT.

Source: SDR 2006UALA00596
OTHER · 2006-03-27 Unresolved
ATA 3350

Part: POWER SUPPLY — INOPERATIVE (EMERGENCY EXIT) · airframe 55,492 hrs · 32,392 cycles

EMERGENCY EXIT SIGNS ABOVE LT OVERWING HATCH AND LOWER FWD CORNER OF LT OVERWING HATCH INOP.

Source: SDR 2006UALA00595
OTHER · 2006-01-08 Unresolved
ATA 2150

Part: A/C PACK — INOPERATIVE (LEFT) · airframe 54,930 hrs · 32,049 cycles

LEFT PACK INOP. REMAINING PACK DELIVERING AIR AT 120 DEGREES AND COULD NOT BE COOLED. CONTROL CABIN DUCT OVERHEAT SWITCH FAILED. REPLACED SWITCH S11. NO FURTHER INCIDENT REPORTED.

Source: SDR 2006UALA00045

2005

OTHER · 2005-12-02 Unresolved
ATA 3397

Part: WIRE — DAMAGED (EMERGENCY LIGHT) · airframe 54,689 hrs · 31,907 cycles

FIRST CLASS FLOOR EEL AND GALLEY STRIP EEL LIGHT IS INOP. REPLACED FEEDER CABLE.

Source: SDR 2005UALA01386
OTHER · 2005-08-16 Unresolved
ATA 5330

Part: SKIN — CRACKED (BELOW DOOR 2L) · airframe 53,904 hrs · 31,451 cycles

DENT FWD AND BELOW DOOR 2L.

Source: SDR 2005UALA00838
OTHER · 2005-02-23 Unresolved
ATA 5312

Part: PRESSURE PANEL — CRACKED (FUSELAGE) · airframe 52,868 hrs · 30,857 cycles

STA 664 PRESSURE DECK IS CRACKED AT APPROXIMATELY LBL 30. ACCOMPLISHED. INSTALLED DOUBLER REPAIR.

Source: SDR 2005UALA00184
OTHER · 2005-02-23 Unresolved
ATA 5315

Part: FLOORBEAM — CORRODED (FUSELAGE) · airframe 52,868 hrs · 30,857 cycles

CORROSION ON FWD LT CABIN FLOORBEAM AT STA 294.5 LBL 37-53. ACCOMPLISHED. BLENDED OUT DAMAGE AND INSTALLED ANGLE/STRAP REPAIR.

Source: SDR 2005UALA00183

2004

WARNING INDICATION · 2004-03-16 Unresolved
ATA 5270

Part: TARGET — OUT OF ADJUST (CARGO DOOR) · airframe 50,408 hrs · 29,453 cycles

RETURNED TO THE FIELD DUE TO A CARGO DOOR INDICATION. ADJUSTED TARGET. THE TARGET CAN BE DAMAGED/MISALIGNED DURING THE BAG LOADING PROCESS. THIS IS THE TYPICAL CAUSE OF NOTED CONDITION.

Source: SDR 2004UALA00254

2003

OTHER · 2003-09-21 Unresolved
ATA 5230

Part: SKIN — DENTED (CARGO DOOR) · airframe 49,193 hrs · 28,760 cycles

FWD CARGO PIT DOOR EXTERNAL SKIN, AFT LOWER QUADRANT-HAS NUMEROUS DENTS. MAJOR REPAIR ACCOMPLISHED, INSTALLED DOUBLER REPAIR.

Source: SDR 2003UALA00707

2002

WARNING INDICATION · 2002-12-25 Unresolved
ATA 3150

Part: WARNING LIGHT — ILLUMINATED (COCKPIT)

AFT CARGO LIGHT CAME ON JUST BEFORE V1. RETURN TO FIELD.

Source: SDR 2002UALA01892

1998

FALSE WARNING · 1998-08-28 Unresolved
ATA 5270

Part: ANNUNCIATOR — FAILED (1L DOOR)

DOOR 1L LIGHT ILLUMINATED. *S/D* REPLACED DOOR WARNING ANNUCIATOR MODULE.

Source: SDR 98UAL900412
WARNING INDICATION · 1998-02-18 Unresolved
ATA 5210

Part: MECHANISM — LACK OF LUBE (PAX DOOR)

CABIN DOOR WARNING LIGHT ILLUMINATED. *S/D* CHECKED OPERATION OF DOOR 1L. CLEANED AND LUBED LATCH ROLLERS AND OPERATING MECHANISMS, DOOR OP CHECKED GOOD.

Source: SDR 98UAL900072

1996

NO TEST · 1996-08-12 Unresolved
ATA 3350

Part: STRIP — DAMAGED (CABIN)

EMERGENCY ESCAPE PATH LIGHTING INOP FROM ROW 13 TO THE AFT GALLEY. REPAIRED LIGHT STRIP AND TRIMMED CARPET, CHECKS OK.

Source: SDR 96UAL900619
VIBRATION/BUFFET; FLT CONT AFFECTED · 1996-06-06 Unresolved
ATA 2210

Part: COUPLER — FAILED (E/E COMPT)

SEVERAL UNCOMMANDED RUDDER MOVEMENTS, DESCENDED TO LOWER ALTITUDE. *S/D* YAW COUPLER WAS REPLACED. SHOP FOUND YAW COUPLER RATE GYRO FAULTY, CHECKS OK.

Source: SDR 96UAL900418