# N604FF: 1970 Boeing 747-121, registration cancelled 2017-07-14

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 14, 2017
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Boeing 747-121](https://openairdocs.org/model/boeing-747-121) (registry code 138487A)
- Engine: [Pratt & Whitney JT9D series](https://openairdocs.org/engine/pratt-whitney-jt9d-series) (registry code 52054)
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE) (OpenAirDocs)
- Serial number: 19659
- Year built: 1970
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: October 11, 1988
- Certificate issued: September 12, 1988
- Last registry action: February 13, 2006
- Mode S code: A7D69E
- Owner when cancelled: [Tower Air Inc](https://openairdocs.org/faa-owner/TOWER%20AIR%20INC)
- Location: [Jamaica, NY](https://openairdocs.org/faa-place/NY/Jamaica)
- Owner type: Corporation
- Owner's area on the map: 40.6470° N, 73.7873° W: Placed by OpenAirDocs at the center of ZIP code 11430, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N604FF
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=604FF
- Page: https://openairdocs.org/deregistered/N604FF-2017-07-14

From the FAA registry file of October 28, 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 747-121: https://openairdocs.org/model/boeing-747-121.md

## Service difficulty reports (50)

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

- [SDR TWRA97129](https://openairdocs.org/sdr/TWRA97129), May 29, 1997: WIRE. BROKEN. DURING DAILY SERVICE, FOUND EVAC LIGHT 28C INOPERATIVE. REPAIRED BROKEN WIRE. OPS CHECKED OK PER MM 33-51-00. (X)
- [SDR TWRA97128](https://openairdocs.org/sdr/TWRA97128), May 29, 1997: FUSE. BLOWN. DURING DAILY SERVICE, FOUND ALL EVAC LIGHTS AT C-ZONE WENT OUT (LEFT SIDE ONLY). REPLACED FUSE. OPS CHECKED NORMAL PER MM 33-51-00. (X)
- [SDR TWRA97127](https://openairdocs.org/sdr/TWRA97127), May 29, 1997: FUSE. BLOWN. DURING DAILY SERVICE, FOUND ENTIRE E-ZONE EVAC LIGHTS INOPERATIVE. REPLACED FUSE AT CHARGER. OPS CHECKED OK PER MM 33-51-00, PAGE 501. (X)
- [SDR TWRA97126](https://openairdocs.org/sdr/TWRA97126), May 29, 1997: FUSE. BLOWN. DURING DAILY SERVICE, FOUND C-ZONE LEFT SIDE EVAC LIGHTS INOPERABLE. FOUND 5-AMP FUSE BLOWN. REPLACED FUSE. OPS CHECKED OK PER MM 33-51-00. (X)
- [SDR TWRA97125](https://openairdocs.org/sdr/TWRA97125), May 28, 1997: WIRE. BROKEN. DURING DAILY SERVICE, FOUND 26K EVAC LIGHT INOPERATIVE. REPAIRED BROKEN WIRE. OPS CK OK PER MM 33-51-00. (X)
- [SDR TWRA97124](https://openairdocs.org/sdr/TWRA97124), May 26, 1997: BATTERY PACK. DISCHARGED. DURING DAILY CHECK, FOUND ENTIRE 'E' ZONE EGRESS LIGHTS INOP AFTER 2-3 MINUTES. REPLACED 'E' ZONE EGRESS BATTERY PACK. LIGHTS CHECKED NORMAL PER MM 33-51-00. (M
- [SDR TWRA97118](https://openairdocs.org/sdr/TWRA97118), May 23, 1997: FUSE. FAILED. DURING DAILY CHECK, FOUND C-ZONE LEFT EVAC LIGHTS INOPERABLE. REMOVED AND REPLACED FUSE ON CHARGER. OPS CKD OK PER MM 33-51-00. (X)
- [SDR TWRA97117](https://openairdocs.org/sdr/TWRA97117), May 23, 1997: FUSE. FAILED. DURING DAILY CHECK, FOUND L3 DOOR JUMP SEAT EVAC LIGHT INOPERABLE. REMOVED AND REPLACED FUSE ON CHARGER. OPS CKD OK PER MM 33-51-00. (X)
- [SDR TWRA97116](https://openairdocs.org/sdr/TWRA97116), May 23, 1997: FUSE. FAILED. DURING DAILY CHECK FOUND 'E' ZONE BOTH SIDES OF EVAC LIGHTS ARE INOPERABLE. REMOVED AND REPLACED FUSE ON CHARGER. OPS CKD OK PER MM 33-51-00. (X)
- [SDR TWRA97115](https://openairdocs.org/sdr/TWRA97115), May 23, 1997: FUSE. FAILED. DURING DAILY CHECK, FOUND FWD OF AFT LAV CROSSWAY EVAC LIGHTS ARE INOPERABLE. FOUND BLOWN FUSE ON CHARGER. REMOVED AND REPLACED FUSE. OPS CKD OK PER MM 33-51-00
- [SDR TWRA97109](https://openairdocs.org/sdr/TWRA97109), May 15, 1997: CHARGER. DEFECTIVE. DURING DAILY SERVICE AT JFK, ALL EVAC LIGHTS ON LEFT SIDE OF 'C' ZONE FOUND INOP. REPLACED BATTERY CHARGER. OPS CHECK OK PER MM 33-51-00. (M)
- [SDR TWRA97105](https://openairdocs.org/sdr/TWRA97105), May 14, 1997: FUSE. FAILED. JFK - DURING DAILY SERVICE, FOUND E-ZONE EMERGENCY EVAC LIGHT INOPERATIVE. FOUND FUSE N/G ON THE CHARGER, REPLACED FUSE AND OPS CHKS OK PER MM 33-51-00. REFEREN
- [SDR 97ZZZX2599](https://openairdocs.org/sdr/97ZZZX2599), May 14, 1997: WIRE. BROKEN. JFK - DURING DAILY SERVICE, FOUND E-ZONE EVAC LIGHT INOPERATIVE AT SEAT 64E. FOUND WIRE GOING TO LIGHT ASSY BROKEN. REPAIRED WIRE, OPS CHKS OK PER MM 33-51-00. 
- [SDR TWRA97101](https://openairdocs.org/sdr/TWRA97101), May 9, 1997: CONNECTOR. LOOSE. DURING DAILY SERVICE, FOUND C-ZONE LEFT SIDE EVAC LIGHTS AT SEATS INOP. RESPLICED FEEDER CONNECTION AT 32ABC, OPS CHECKS OK. (M)
- [SDR TWRA9780](https://openairdocs.org/sdr/TWRA9780), May 6, 1997: FUEL VALVE. LEAKING. NR 3 MAIN FULE TANK INDICATES AN INCREASE OF 4200 LBS PER HOUR. REPLACED NR 3 MAIN FUEL VALVE AND LEFT PUMP DISCHARGE CHECK VALVE. REPLACED I/B FILL VALVE AND F
- [SDR TWRA9785](https://openairdocs.org/sdr/TWRA9785), May 5, 1997: WIRE. BROKEN. DURING DAILY SERVICE, 'E' ZONE EVAC LGHT INOP ON LEFT AND RIGHT SIDE. REPAIRED BROKEN WIRE AT POWER SUPPLY. OPS CHECKS OK PER MM 33-51-00. (M)
- [SDR TWRA9792](https://openairdocs.org/sdr/TWRA9792), May 2, 1997: BATTERY. DISCHARGED. A ZONE EVAC LIGHTS INOP ON ALL SEAT ARM RESTS. SPIRAL STAIRWAY EVAC LIGHTS. U/D LAV/CREW DOOR AREA, EXIT SIGNS INOP. REPLACED BATTERY PACK, OPS CHECK OK 33-51-0
- [SDR TWRA9781](https://openairdocs.org/sdr/TWRA9781), Apr 22, 1997: HF COUPLER. DEFECTIVE. IN FLIGHT, FOUND THAT NR 1 HF CAUSES FIRE WARNING BELLS FOR LOWER CARGO, CAPTAINS CAS FLAG COMES IN TO VIEW ON A/S INDICATOR AND F/O'S ALTIMETER GOES TO STANDBY
- [SDR TWRA9769](https://openairdocs.org/sdr/TWRA9769), Apr 12, 1997: BATTERY CHARGER. INOPERATIVE. FOUND DURING DAILY CHECK, UPPER DECK CREW SERVICE DOOR SILL LIGHTS ARE INOP. FOUND BATTERY UNIT NOT CHARGING. REMOVED AND REPLACED BATTERY UNIT AND CHARGER. OPS
- [SDR 97ZZZM545](https://openairdocs.org/sdr/97ZZZM545), Apr 12, 1997: BATTERY CHARGER. DISCHARGED. FOUND DURING DAILY CHECK, UPPER DECK CREW SERVICE DOOR SILL LIGHTS ARE INOP. FOUND BATTERY UNIT NOT CHARGING. REMOVED AND REPLACED BATTERY UNIT AND CHARGER. OPS
- [SDR TWRA9764](https://openairdocs.org/sdr/TWRA9764), Apr 7, 1997: BATTERY PACK. DISCHARGED. DURING DAILY SERVICE AT JFK, FOUND 'E' ZONE EGRESS LIGHTS BATTERY PACK WEAK. REPLACED 'E' ZONE' BATTERY PACK. (M)
- [SDR TWRA9753](https://openairdocs.org/sdr/TWRA9753), Apr 4, 1997: BATTERY PACK. DISCHARGED. DURING DAILY SERVICE, FOUND LEFT SIDE OVERWING EMERGENCY LIGHTS INOP. DURING DAILY SERVICE, FOUND ENTIRE E-ZONE EVAC LIGHTS INOP. REPLACED BATTERY PACK, OPS CHE
- [SDR 97ZZZM528](https://openairdocs.org/sdr/97ZZZM528), Apr 4, 1997: BATTERY CHARGER. INOPERATIVE. DURING DAILY SERVICE, FOUND LEFT SIDE OVERWING EMERGENCY LIGHTS INOP. DURING DAILY SERVICE, FOUND ENTIRE E-ZONE EVAC LIGHTS INOP. REPLACED BATTERY PACK, OPS CHE
- [SDR TWRA9751](https://openairdocs.org/sdr/TWRA9751), Apr 3, 1997: CONNECTOR. LOOSE. FROM NON-ROUTINE WORK CARD WHILE UNDER SERVICE AT JFK, FOUND THE UPPER DECK CREW DOOR EXIT SIGN INOP AND LEFT SIDE OVERWING EMERGENCY LIGHT INOP. FOUND CONNECTO
- [SDR TWRA9752](https://openairdocs.org/sdr/TWRA9752), Apr 2, 1997: BATTERY PACK. DISCHARGED. FROM NON-ROUTINE ITEM, EVAC EXIT LIGHTS OUT ON U/D STAIRS/LAV AND CREW U/D EMER EXIT DOOR. REPLACED CREW BATTERY PACK, OPS CHECK OK PER MM 33-50-00. RECONNECTED
- [SDR TWRA9762](https://openairdocs.org/sdr/TWRA9762), Apr 1, 1997: CONNECTOR. LOOSE. DURING DAILY SERVICE AT JFK, FOUND UPPER DECK CREW DOOR EXIT SIGN INOP. FOUND CONNECTOR DISCONNECTED. RECONNECTED AND OPS CHECKS OK. (M)
- [SDR TWA9743](https://openairdocs.org/sdr/TWA9743), Mar 29, 1997: FIRE DETECTOR. FAILED. DURING TAKEOFF, NR 4 ENGINE NACELLE FIRE DETECTION AND FAULT LIGHTS ILLUMINATED WITH A-LOOP NACELLE TEMP INDICATOR OSCILLATION TO F-BAND. B-LOOP SELECTED AND TE
- [SDR TWRA9745](https://openairdocs.org/sdr/TWRA9745), Mar 28, 1997: BATTERY SUPPLY. DISCHARGED. 5R M.E.D. EMER LT ON SIDEWALL IS INOP, DURING MAINT. 5L M.E.D. EMER LT ON SIDEWALL IS INOP, DURING MAINT. E-ZONE ALL EMER LTS ON SIDE OF SEATS INOP, DURING MAIN
- [SDR 97ZZZX1665](https://openairdocs.org/sdr/97ZZZX1665), Mar 28, 1997: BATTERY SUPPLY. DISCHARGED. 5R M.E.D. EMER LT ON SIDEWALL IS INOP, DURING MAINT. 5L M.E.D. EMER LT ON SIDEWALL IS INOP, DURING MAINT. E-ZONE ALL EMER LTS ON SIDE OF SEATS INOP, DURING MAIN
- [SDR 97ZZZX1664](https://openairdocs.org/sdr/97ZZZX1664), Mar 28, 1997: BATTERY SUPPLY. DISCHARGED. 5R M.E.D. EMER LT ON SIDEWALL IS INOP, DURING MAINT. 5L M.E.D. EMER LT ON SIDEWALL IS INOP, DURING MAINT. E-ZONE ALL EMER LTS ON SIDE OF SEATS INOP, DURING MAIN
- [SDR TWRA9742](https://openairdocs.org/sdr/TWRA9742), Mar 27, 1997: BATTERY PACK. DISCONNECTED. AREA OF SEAT 36HJK CEILING EMERGENCY LIGHT INOPERABLE. C-ZONE, SEATS 43ABC TO SEATS 45ABC EGRESS LIGHTS INOPERABLE. FOUND CEILING LIGHTS BATTERY PACK DISCONNECT
- [SDR 97ZZZX1660](https://openairdocs.org/sdr/97ZZZX1660), Mar 27, 1997: WIRE. BROKEN. AREA OF SEAT 36HJK CEILING EMERGENCY LIGHT INOPERABLE. C-ZONE, SEATS 43ABC TO SEATS 45ABC EGRESS LIGHTS INOPERABLE. FOUND CEILING LIGHTS BATTERY PACK DISCONNECT
- [SDR TWRA9738](https://openairdocs.org/sdr/TWRA9738), Mar 20, 1997: WIRE. BROKEN. 'A' ZONE SEATS 4 AC TO 7AC EGRESS LIGHTS INOP. REPAIRED BROKEN WIRE AT SEAT 5AC, OPS OK. (M)
- [SDR TWRA9733](https://openairdocs.org/sdr/TWRA9733), Mar 14, 1997: LIGHTS. INOPERATIVE. EMERGENCY LIGHTS INOP AT ROW 16 ABC. REINSTALL MISSING EMERGENCY LIGHTS AND EGRESS PACKS. (M)
- [SDR TWRA9732](https://openairdocs.org/sdr/TWRA9732), Mar 9, 1997: WIRE. BROKEN. U/D FORWARD OF UPPER DECK GALLEY, EXIT SIGN EVAC LIGHT INOP. FOUND BROKEN SPLICE AT FOWARD U/D GALLEY. REPAIRED WIRE AND OPS CHECKED OK PER MM 33-51-00. (M)
- [SDR TWRA96282](https://openairdocs.org/sdr/TWRA96282), Aug 13, 1996: LIGHT. INOPERATIVE. DURING DAILY CHECK, FOUND NR 4 RIGHT OVERWING EMERGENCY LIGHT FWD LIGHT INOP. REMOVED AND REPLACED LIGHT ASSY. OPS CHECKED NORMAL PER MM 33-51-00. (M)
- [SDR TWRA96268](https://openairdocs.org/sdr/TWRA96268), Aug 10, 1996: SLIDE RAFT. DEPLOYED. DURING B-CHECK, FOUND L2 DOOR WAS OPENED AFTER ARMING. SLIDE PARTIALLY DEPLOYED AND DOOR ASSIST BOTTLE FULLY DISCHARGED. REMOVED AND REPLACED ESCAPE SLIDE RAFT 
- [SDR TWRA96202](https://openairdocs.org/sdr/TWRA96202), Jul 24, 1996: BULB. FAILED. DURING DAILY CHECK, FOUND EVAC OVERWING LEFT SIDE AND RIGHT SIDE. FIRST LIGHT FROM BOTTOM INOP. RELAMPED, OPS CHECK OK PER MM 33-51-00. (M)
- [SDR TWRA96167](https://openairdocs.org/sdr/TWRA96167), Jul 14, 1996: BULB. FAILED. DURING DAILY CHECK, FOUND EMERGENCY LIGHTS AT5R DOOR THRESHOLD BOTH INOP. RELAMPED, OPS CHECK NORMAL PER MM 33-51-00. (M)
- [SDR TWRA96112](https://openairdocs.org/sdr/TWRA96112), Jul 5, 1996: WIRE. LOOSE. DURING DAILY CHECK, FOUND EVAC LIGHTS INOP, MOUNTED ON SEAT SIDE PANEL BETWEEN 41H AND 35H. FOUND LOOSE WIRE, SECURED WIRE ON SEATS BETWEEN 41H AND 35H. OPS CHE
- [SDR TWRA9654](https://openairdocs.org/sdr/TWRA9654), Jun 24, 1996: SIGN. BROKEN. DURING DAILY SERVICE, FOUND 5R MED EXIT LIGHT INOPERATIVE.REPLACED BROKEN EXIT SIGN.(M)
- [SDR TWRA9641](https://openairdocs.org/sdr/TWRA9641), Jun 13, 1996: CONNECTOR. LOOSE. CREW REPORTED UPPER DECK SMOKE ALARM SOUNDS INTERMITTENTLY WITH NO INDICATION OF SMOKE PRESENT. DURING TROUBLESHOOTING, MAINTENANCE FOUND LOOSE CANNON PLUG CONN
- [SDR TWRA9628](https://openairdocs.org/sdr/TWRA9628), May 13, 1996: ENGINE. FAILED. DURING CRUISE, NR 1 ENGINE HAD A STEADY STATE STALL AT FLT LEVEL 350 FEET, THRUST WAS REDUCED AND STABILIZED, THEN PUSHED THROTTLE TO 1.36 EPR WHEN ENGINE STALL
- [SDR TWRA9626](https://openairdocs.org/sdr/TWRA9626), May 10, 1996: TURBINE. FAILED. AT 13,000 FEET AFTER TAKEOFF LOUD BOOM WAS HEARD AND CONFIRMED ENGINE ON NR 3 ENGINE. AFTER RETURN TO JED INITIAL INSPECTION FOUND METAL IN TAILPIPE. BORESCOPE 
- [SDR TWRA9611](https://openairdocs.org/sdr/TWRA9611), Mar 11, 1996: FUEL FILTER. CONTAMINATED. ON MARCH 11, 1996, AIRCRAFT, FLIGHT 42, ON DESCENT FROM FL 350 TO FL 330 EXPERIENCED A NR 1 ENGINE SHUT DOWN DUE TO NO THROTTLE RESPONSE. ENGINE WAS RESTARTED A
- [SDR TWRA9602](https://openairdocs.org/sdr/TWRA9602), Jan 10, 1996: COFFEE MAKER. FAILED. JFK/LAX - DURING FLIGHT, MID-GALLEY COFFEE MAKER TRIPPED CIRCUIT BREAKER. WHEN CIRCUIT BREAKER WAS RESET, A STRONG ODOR OF ELECTRICAL SMOKE WAS NOTICED FOLLOWED
- [SDR TWRA9558](https://openairdocs.org/sdr/TWRA9558), Oct 30, 1995: SUPPORT LINK. CRACKED. NR 7 CANOE AFT SUPPORT LINK CRACKED. REMOVED AND REPLACED NR 7 FLAP TRACK LINK. OPS CHECK OK. (X)
- [SDR TWRA9557](https://openairdocs.org/sdr/TWRA9557), Oct 29, 1995: ENG VANE CONTROL. FAILED. NR 1 ENGINE STALLED AT TOP OF DESCENT. EGT MAX 778 DEGREES, ENGINE SHUT-DOWN. RE-LIT NORMAL IN DESCENT AT FLIGHT LEVEL 280. ENGINE OPS NORMAL REMAINDER OF FLIGH
- [SDR TWRA9555](https://openairdocs.org/sdr/TWRA9555), Oct 25, 1995: EEL. INOPERATIVE. FORTY FOUR G/H LIGHT OVERHEAD EVAC LIGHTS INOP. REPLACED LIGHT ASSEMBLY. OPS CHECKS OK, MM33-50-00. SEAT MOUNTED EVAC LIGHT 14H INOP. REPAIRED WIRING. OPS CHECK
- [SDR TWRA9516](https://openairdocs.org/sdr/TWRA9516), Mar 12, 1995: ENGINE. MALFUNCTIONED. ABORTED TAKEOFF DUE TO NR 2 ENGINE EXPERIENCED A DROP IN EPR AND N1 ALONG WITH A INCREASE IN EGT. FOLLOWING TROUBLESHOOTING, MAINTENANCE ELECTED TO FERRY AIRCRA

## 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.

- [Incident 19920501024669I](https://openairdocs.org/incident/19920501024669I), May 1, 1992: Boeing 747121 (N604FF), Camp Douglas, WI. While attempting to turn around at end of runway the rear landing gear truck slid off into soft ground.

## Other aircraft with N604FF

- [Registered now](https://openairdocs.org/aircraft/N604FF): Piper PA-28-181, S/N 2881604, built 2022

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