# N668US: 1990 Boeing 747-451, registration cancelled 2018-08-22

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 22, 2018
- Status when cancelled: Valid registration
- Airframe: [Boeing 747-451](https://openairdocs.org/model/boeing-747-451) (registry code 1384940)
- Engine: [Pratt & Whitney PW4000 series](https://openairdocs.org/engine/pratt-whitney-pw4000-series) (registry code 52119)
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE) (OpenAirDocs)
- Serial number: 24223
- Year built: 1990
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: July 25, 1990
- Certificate issued: December 31, 2009
- Last registry action: April 13, 2016
- Mode S code: A8D3C4
- Owner when cancelled: [Delta Air Lines Inc](https://openairdocs.org/faa-owner/DELTA%20AIR%20LINES%20INC)
- Location: [Atlanta, GA](https://openairdocs.org/faa-place/GA/Atlanta)
- Owner type: Corporation
- Owner's area on the map: 33.6604° N, 84.3865° W: Placed by OpenAirDocs at the center of ZIP code 30354, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N668US
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=668US
- Page: https://openairdocs.org/deregistered/N668US-2018-08-22

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Boeing 747-451: https://openairdocs.org/model/boeing-747-451.md

## Service difficulty reports (105, newest 50)

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR DALA2017112008244](https://openairdocs.org/sdr/DALA2017112008244), Nov 18, 2017: WIRE. BROKEN. DURING A SERVICE CHECK, FOUND THE WIRE TO THE EMERGENCY LIGHT AT THE R3 DOOR BROKEN. REMOVED AND REPLACED THE LIGHT ASSY IAW AMM 33-51-12. OPS CHECKED GOOD, OK 
- [SDR DALA2017100207215](https://openairdocs.org/sdr/DALA2017100207215), Sep 30, 2017: BATTERY PACK. INOPERATIVE. EMERGENCY LIGHT SIGNS WILL NOT ILLUMINATE DURING TEST. R & R THE BATTERY PACK M312 IAW AMM 33-51. OP CHECKED GOOD. OK FOR SERVICE.
- [SDR DALA2017100207213](https://openairdocs.org/sdr/DALA2017100207213), Sep 30, 2017: PIN. UNSECURE. EMERGENCY LIGHTS INOPERATIVE NEAR THE L3 DOOR IN FRONT OF LAVATORIES . SECURED THE PIN ON THE LIGHT . OPS CHECKED GOOD.
- [SDR DALA2017081406243](https://openairdocs.org/sdr/DALA2017081406243), Aug 9, 2017: SWITCH. DIRTY. PRIOR TO DEPARTURE, THE R3 DOOR OPEN INDICATION ON THE EICAS DOOR PAGE. TROUBLESHOT IAW FIM 52-71, TASK 812-818. FOUND SWITCH DIRTY AND HAS EXCESSIVE SEALANT. R
- [SDR DALA2017081006122](https://openairdocs.org/sdr/DALA2017081006122), Aug 9, 2017: POWER SUPPLY. INOPERATIVE. RIGHT FWD TWO EXTERIOR EMERGENCY LIGHTS INOPERATIVE. REPLACED THE POWER SUPPLY, CHECKED OK IAW MM 33-51.
- [SDR DALA2017071805541](https://openairdocs.org/sdr/DALA2017071805541), Jul 15, 2017: LIGHT. DISCONNECTED. GALLEY LEFT FLOOR EMERGENCY LIGHTS INOPERATIVE. RECONNECTED LIGHT ASSY & SECURED TESTED IAW MM 33-51. OPS CHECKED OK.
- [SDR DALA2017061204677](https://openairdocs.org/sdr/DALA2017061204677), Jun 9, 2017: ENGINE. FAILED. AIR TURNBACK DURING FLIGHT, THE NUMBER 1 ENGINE STALLED WITH EGT RISE, ENGINE WAS SHUTDOWN. AIRCRAFT RETURNED SAFELY TO DEPARTURE. MAINTENANCE FOUND METAL IN TH
- [SDR DALA2017051503931](https://openairdocs.org/sdr/DALA2017051503931), May 13, 2017: LIGHT. UNSECURE. FLOOR EMERGENCY LIGHT UNSECURE. INSTALLED AND OPS CHECKED NORMAL.
- [SDR DALA2017041703127](https://openairdocs.org/sdr/DALA2017041703127), Apr 16, 2017: BLADE. DAMAGED. DURING BOROSCOPE INSPECTION OF THE NR 3 ENGINE FOUND SEVERAL SECOND STAGE HPT BLADES DAMAGED, EXCEEDING LIMITS, REMOVED ENGINE REQUIRED IAW AMM 72-00-00 TABLE 6
- [SDR DALA2017031502074](https://openairdocs.org/sdr/DALA2017031502074), Mar 12, 2017: COFFEEMAKER. ODOR. F/A REPORTED BURNING ODOR AT THE FWD GALLEY. R & R THE COFFEEMAKER IAW AMM 25-31.
- [SDR DALA2017022201509](https://openairdocs.org/sdr/DALA2017022201509), Feb 21, 2017: BATTERY PACK. INOPERATIVE. EMERGENCY EXIT LIGHT AT THE L1 DOOR INOPERATIVE. REPLACED THE BATTERY PACK, OPS CHECKED GOOD IAW 33-51-00.
- [SDR DALA2017022201508](https://openairdocs.org/sdr/DALA2017022201508), Feb 21, 2017: WIRE. DISCONNECTED. EMERGENCY LIGHTS FROM 43 ABC TO THE L4 DOOR INOPERATIVE. FOUND A WIRE DISCONNECTED. CONNECTED THE WIRE, OPS CHECKED GOOD IAW 33-51-00.
- [SDR DALA2016120809761](https://openairdocs.org/sdr/DALA2016120809761), Dec 7, 2016: POWER SUPPLY. INOPERATIVE. DURING A SERVICE CHECK, FOUND EMERGENCY EXIT LIGHTS INOPERATIVE IN UPPER DECK ROWS 72-77. REMOVED AND REPLACED POWER SUPPLY M335 IAW AMM 33-51-04.
- [SDR DALA2016120509567](https://openairdocs.org/sdr/DALA2016120509567), Dec 3, 2016: BATTERY PACK. INOPERATIVE. EMERGENCY LIGHTS INOPERATIVE ROWS 73-75. REPLACED POWER SUPPLY BATTERY (M335) IAW AMM 33-51-04.
- [SDR DALA2017010900170](https://openairdocs.org/sdr/DALA2017010900170), Nov 15, 2016: SHIM. MIGRATED. A MIGRATED SHIM AT REAR SPAR KICK FITTING AT BS 1241 LBL 128 AFT LOWER EDGE INSIDE CENTER FUEL TANK. SHIM REPLACEMENT WITH SOLID SHIM REQUIRED PER B747-400 SRM 
- [SDR DALA2016110108088](https://openairdocs.org/sdr/DALA2016110108088), Oct 29, 2016: OVEN. SMOKE. REPORTED STRONG ODOR OF SMOKE FROM UPPER DECK NUMBER ONE OVEN. THE OVEN CARRIER WAS REMOVED AND A HAND TOWEL WAS FOUND INSIDE AND VERIFIED TO BE THE SOURCE OF T
- [SDR DALA2016100607205](https://openairdocs.org/sdr/DALA2016100607205), Oct 3, 2016: BATTERY PACK. INOPERATIVE. EMERGENCY EXIT SIGNS LIGHT ROW 75 ARE INOPERATIVE. MAINTENANCE REPLACED THE BATTERY PACK. SYSTEM OPERATION IS NORMAL.
- [SDR DALA2016020103581](https://openairdocs.org/sdr/DALA2016020103581), Feb 1, 2016: SKIN. CRACKED. ONE CRACK FOUND ON L5 DOOR AFT UPPER CORNER OF THE CUTOUT. THE CRACK LENGTH: 0.4".
- [SDR DALA2016020103038](https://openairdocs.org/sdr/DALA2016020103038), Feb 1, 2016: SKIN. CRACKED. ONE CRACK FOUND ON R5 DOOR AFT UPPER CORNER OF THE CUTOUT THE CRACK LENGTH: 0.2".
- [SDR DALA2015120307364](https://openairdocs.org/sdr/DALA2015120307364), Dec 2, 2015: CARGO TRACK. DAMAGED. TRUCK RAIL DAMAGED IN LOWER FWD CARGO COMPARTMENT AT BS 590. DAMAGE LENGTH 6". REMOVED DAMAGED TIE DOWN TRUCK AT BS 580 TO BS 600 OF TRUCK LBL 45.5. DAMAGE CONT
- [SDR DALA2015112807222](https://openairdocs.org/sdr/DALA2015112807222), Nov 27, 2015: FUSE. INOPERATIVE. EXTERIOR EMERGENCY LIGHTS AT 1ST AND 2ND, TOTAL OF FOUR BULBS, FROM FWD SIDE OF RT FUSELAGE WON'T ILLUMINATE. REPLACED FUSE AND TEST OK IAW AMM 33-51.
- [SDR DALA2014082504712](https://openairdocs.org/sdr/DALA2014082504712), Aug 24, 2014: LIGHT. INOPERATIVE. R4 DOOR MOUNTED EMERGENCY LIGHT INOPERATIVE. REPLACED LT ASSY DOOR MOUNTED EMERGENCY LIGHT.
- [SDR DALA2014082104632](https://openairdocs.org/sdr/DALA2014082104632), Aug 11, 2014: SEAT TRACK. DAMAGED. PRIOR TO SEAT TRACK REMOVAL, FOUND SEAT TRACK LUG BROKEN AT SEAT 53HJK BS 194.95. REPAIRED THE SEAT TRACK.
- [SDR DALA14019446308](https://openairdocs.org/sdr/DALA14019446308), Mar 27, 2014: SKIN. DAMAGED. DURING NON ROUTINE CHECK, HOLE IN FUSELAGE AT BS 330, STRINGER 25 LT. DAMAGE FOUND DURING WALK AROUND, APPLIED TEMPORARY REPAIR IAW SRM 53-10, FIG 10.
- [SDR DALA14009906308](https://openairdocs.org/sdr/DALA14009906308), Feb 14, 2014: SEAT TRACK. CORRODED. BS 1700, LBL 33, SEAT TRACK FOUND CORRODED. REPAIRED SEAT TRACK IAW EAR 522136-14, REV 0 AND SRM 53-00-52.
- [SDR DALA2014120406389](https://openairdocs.org/sdr/DALA2014120406389), Feb 12, 2014: SKIN. CORRODED. CORROSION WAS NOTED ON THE INNER SKIN OF THE AFT CARGO DOOR.
- [SDR DALA14009886308](https://openairdocs.org/sdr/DALA14009886308), Feb 11, 2014: DOOR FRAME. CRACKED. DURING H CHECK, A CRACK WAS DETECTED ABOVE THE R4 DOOR FRAME UPPER SILL WEB, BS 1718, S16R. ER/A 522139-14AD, SECTION I WAS ACCOMPLISHED.
- [SDR DALA14009876308](https://openairdocs.org/sdr/DALA14009876308), Feb 10, 2014: FLOOR SUPPORT. CRACKED. BS 460, LBL 80 FLOOR SUPPORT FOUND CRACKED. REPAIRED CRACK IAW ER/A 522128-14, REV ORIGINAL.
- [SDR DALA14009866308](https://openairdocs.org/sdr/DALA14009866308), Feb 10, 2014: SEAT TRACK. CORRODED. M/D CABIN BS 2260-2280, RBL33 SEAT TRACK FOUND CORROSION. SEAT TRACK REPLACED IAW SRM 53-60-52, REPAIR 9. CUT OUT AREA PERFORMED HFEC INSPECTION IAW NDTM PART 6
- [SDR DALA14009846308](https://openairdocs.org/sdr/DALA14009846308), Feb 2, 2014: SKIN. DENTED. BS 400-420, S3AL FUSELAGE SKIN FOUND DENTED. REPAIRED SKIN IAW SRM 53-00-01 REPAIR 1.
- [SDR DALA14009836308](https://openairdocs.org/sdr/DALA14009836308), Feb 2, 2014: SKIN. DENTED. BS 400-420 ,S3AL FUSELAGE SKIN FOUND DENTED. REPAIRED SKIN IAW SRM 53-00-01 REPAIR 1. HFEC INSPECTED CUTOUT AREA, NO CRACKS FOUND, OPEN HOLE HFEC INSPECT NO CRA
- [SDR DALA13072006308](https://openairdocs.org/sdr/DALA13072006308), Dec 25, 2013: POWER SUPPLY. INOPERATIVE. LEFT OVERWING EMERGENCY, LIGHT 3RD AND 4TH FROM FWD INOPERATIVE. REPLACED POWER SUPPLY & CKS OK IAW AMM 33-51.
- [SDR DALA13015756308](https://openairdocs.org/sdr/DALA13015756308), Apr 8, 2013: BATTERY PACK. INOPERATIVE. LT DOOR BATTERY, OK GREEN LIGHT TEST FUNCTION INOPERATIVE. REPLACED EMERGENCY POWER BATTERY PACK MPN NW6A24-41484-501.
- [SDR DALA13005156308](https://openairdocs.org/sdr/DALA13005156308), Jan 22, 2013: BRACKET. CRACKED. CRACKED BRACKET BS 1120, RT TENSION TIE SLOPING SHEAR WEB FWD INBD SECTION (5310-01340-03B). ACCORDING TO SRM 53-40-30. REPAIR 3, FIG 201, COMPLETED THIS REPAIR
- [SDR DALA12006696308](https://openairdocs.org/sdr/DALA12006696308), Sep 9, 2012: CONNECTOR. DAMAGED. DURING INSPECTION FOUND EXIT EMERGENCY LIGHT INOPERATIVE ABOVE SEAT 13A/D. MAINTENANCE REPAIRED LOOSE PIN ON CONNECTOR D11274J.
- [SDR DALA12001966308](https://openairdocs.org/sdr/DALA12001966308), Jun 24, 2012: SEAT TRACK. DAMAGED. DURING INSPECTION, FOUND SEAT TRACK AT BS 1240 RBL 11 DAMAGED. MAINTENANCE REPLACED DAMAGED SEAT TRACK ASSEMBLY PER ERA 14-503513.
- [SDR DALA12001876308](https://openairdocs.org/sdr/DALA12001876308), Jun 20, 2012: SEAT TRACK. DAMAGED. DURING SPECIAL VISIT, THE MAIN DECK SEAT TRACK AT RBL 11.33, STA 1237 WAS FOUND WITH A LUG BLENDED WHERE A SEAT WAS REQUIRED TO BE INSTALLED. MAINTENANCE ACCOMP
- [SDR DALA1217006308](https://openairdocs.org/sdr/DALA1217006308), Mar 16, 2012: BATTERY. DISCHARGED. DURING A MAINTENANCE VISIT, THE UPPER DECK EMERGENCY FLASH LIGHT INDICATOR WAS NOT ILLUMINATED. MAINTENANCE REPLACED THE FLASHLIGHT BATTERY AND INSTALLED THE SE
- [SDR DALA1203036308](https://openairdocs.org/sdr/DALA1203036308), Jan 21, 2012: CONNECTOR. DISCONNECTED. DURING A MAINTENANCE VISIT, THE EMERGENCY ESCAPE PATH LIGHT AT SEATS 1, 2 AND 3 ON RIGHT SIDE WERE FOUND TO BE INOPERATIVE. MAINTENANCE FOUND THE CONNECTOR OFF 
- [SDR DALA1161896308](https://openairdocs.org/sdr/DALA1161896308), Nov 4, 2011: ELEMENT. BROKEN. FLIGHT 172 NRT-JFK RETURNED TO NRT WITH THE NR 1 ENGINE SHUTDOWN BY THE CREW DUE TO A FIRE WARNING. MAINTENANCE FOUND A BROKEN DETECTOR ELEMENT. THE ELEMENT AND
- [SDR DALA1151796308](https://openairdocs.org/sdr/DALA1151796308), Sep 5, 2011: WIRE. DISCONNECTED. DURING A MAINTENANCE VISIT, THE EMERGENCY EXIT PATH LIGHT AT ROWS 10-12 LEFT SIDE WERE FOUND TO BE INOPERATIVE. MAINTENANCE CONNECTED THE WIRES TO SOCKETS AT DO
- [SDR DALA1151786308](https://openairdocs.org/sdr/DALA1151786308), Sep 5, 2011: WIRE. DISCONNECTED. DURING A MAINTENANCE VISIT, THE EMERGENCY EXIT PATH LIGHTS AT ROWS 51, 66C, DOORS 4L, 3L, AND 3R WERE FOUND TO BE INOPERATIVE. MAINTENANCE CONNECTED THE WIRES T
- [SDR DALA1131616308](https://openairdocs.org/sdr/DALA1131616308), May 5, 2011: PIN. DISCONNECTED. DURING A MAINTENANCE VISIT, THE EMERGENCY FLOOR PROXIMITY LIGHT AT ROW 9F WAS FOUND TO BE INOPERATIVE. MAINTENANCE RECONNECTED THE PIN. SYSTEM OPERATION WAS NOR
- [SDR DALA1106516308](https://openairdocs.org/sdr/DALA1106516308), Jan 27, 2011: BULKHEAD. CRACKED. DURING PERFORM OPEN HOLE HFEC INSPECTION, CRACK WAS FOUND IN 1 OF THE HOLE ON BS 2598 BULKHEAD REPAIRED ER/A488618-14, REV1. ER/A488618-14, REV 2 PERFORMED REPA
- [SDR DALA1106506308](https://openairdocs.org/sdr/DALA1106506308), Jan 27, 2011: BULKHEAD. CRACKED. DURING PERFORM J/C 5312-01144-02A CRACK WAS FOUND ON BS 2598 BULKHEAD INNER CHORD. REPAIRED IAW SRM 53-80-08, REPAIR 11 AND ER/A 488618-14 REV 0, ER/A48 8618-14
- [SDR DALA1106496308](https://openairdocs.org/sdr/DALA1106496308), Jan 27, 2011: BULKHEAD. CRACKED. DURING PERFORM OPEN HOLE HFEC INSP CRACK WAS FOUND IN 1 OF THE HOLES ON BS 2598 BULKHEAD. REPAIRED IAW SRM 53-80-08, REPAIR 11. ER/A488618-14, REV 2, PERFORM RE
- [SDR DALA1106486308](https://openairdocs.org/sdr/DALA1106486308), Jan 27, 2011: BULKHEAD. CRACKED. DURING PERFORM OPEN HOLE HFEC INSP CRACK WAS FOUND IN 1 OF THE HOLES ON NS2598 BULKHEAD THE SAME 5312-01144-FOR PERFORM J/C 5312-01144-04B FOUND CRACK IN ONE OF
- [SDR DALA1107216308](https://openairdocs.org/sdr/DALA1107216308), Jan 26, 2011: SKIN PANEL. DAMAGED. FUSELAGE SKIN PANEL REQUIRES REPAIR BY BLEND OUT WEAR DAMAGE AT THE VERTICAL STABILIZER SEAL INTERFACE. FOLLOW ON SURFACE HIGH FREQUENCY EDDY CURRENT INSPECTION
- [SDR DALA1105856308](https://openairdocs.org/sdr/DALA1105856308), Jan 25, 2011: DOOR FRAME. CRACKED. NR 4, LT MAIN ENTRY DOOR AFT FRAME LOWER END CRACK BS 1710-1720 WL 200 L=1". REPAIR COMPLETED IAW SRM 52-10-02. REPAIR 2 P201, REV 78, FIG 201. REQUIRE REPEAT I
- [SDR DALA1105826308](https://openairdocs.org/sdr/DALA1105826308), Jan 25, 2011: STRINGER. DEFORMED. STRINGER DEFORMED WAS FOUND AT FWD CARGO COMPARTMENT STA 460-480, S-44R. REPAIRED THE DAMAGE STRINGER IAW ER/A 488619-14 REQUIRE REPEAT INSPECTIONS EXTERNAL DET

All 105: https://openairdocs.org/deregistered/N668US-2018-08-22/reports.md

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ENG17IA026](https://openairdocs.org/ntsb/ENG17IA026), Jun 7, 2017: Boeing 747 451 (N668US), Tokyo, Japan, incident, no damage. Probable cause: The PW4056 engine lost power due to the fatigue fracture of a 5th stage compressor blade. The cause of the fatigue fracture could not be determined.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20120723012239A](https://openairdocs.org/incident/20120723012239A), Jul 23, 2012: Boeing 747-451 (N668US), Tokyo, No damage. Approximately 1 1/2 hours prior to landing a fa was walking the stairs leading from the upper deck to the main cabin. She missed the last 3-4 steps and fell.…

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