Flying Tiger Line Boeing 747-121 incident
Boeing 747-121 · Incident during takeoff
From Ted Stevens Anchorage International Airport (ANC) to Narita International Airport (RJAA)
Event
- NTSB case
- ANC89IA071
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Incident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- 0
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- Airline
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Boeing 747-121
- Aircraft type
- Boeing 747
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N818FT
- Operator
- Flying Tiger Line
- Onboard fatalities
- Unknown
- Route
- From Ted Stevens Anchorage International Airport (ANC), Anchorage, AKTo Narita International Airport (RJAA), TOKYO,JAPAN
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 121: Air Carrier
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Takeoff · roll/run
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Miscellaneous/other
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Minor
Cause areas
- Landing gear, tire › Failure, total
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
DRG THE TKOF ROLL, THE CREW FELT A VIBRATION BTN 135 KTS & LIFT-OFF. THEY LEFT THE GEAR EXTDD & WERE ADZD 2 TIRES HAD SEPD FM THE RGT INSIDE MAIN GEAR TRUCK, A 3RD TIRE BLEW OUT & THE 4TH APPEARED INTACT. THEY DUMPED FUEL & LNDD. AN EXAM REVEALED THE TIRES HAD FAILED, RESULTING IN SKIN DMG & BKN HYD LINE(S). CARGO HAD BEEN LOADED WITH MORE PALLETS ON THE RGT SIDE; SOME PALLETS WERE NOT MARKED TO INDC WT OR SHIPPING ID. A COMPUTER PRINT-OUT (SIGNED BY CAPT & STATION AGENT) SHOWED A LATERAL IMBALANCE OF 18,766 LBS. WITH THIS IMBALANCE, GROSS WT SHOULD NOT HAVE EXCEEDED 744,000 LBS; ACTUAL WT WAS 751,316 LBS. AFTER DEPG THE CARGO RAMP, ACFT WAS TAXIED 3 MI IN A STRAIGHT LINE, THEN 2 LEFT TURNS WERE MADE ONTO RWY 6R FOR TKOF. PREVIOUS LOADING CRITERIA PROVIDED 3% ALLOWANCE FOR RANDOM DISPOSABLE LOADS ON PALLETS. IN 1969, FAA ISSUED AN EXEMPTION FM FAR 25.471(B) TO ALLOW BOEING 747'S TO BE LOADED TO DESIGN LIMIT, PROVIDED INSTRNS WERE AVBL TO ASSURE A SYMMETRICAL LOADING. OF 239 KNOWN TIRE FAILURES, 71 INVOLVED THE FLYING TIGER LINE, AN ALL CARGO CARRIER.
Probable cause
FAILURE OF TIRES ON THE RIGHT INSIDE MAIN GEAR TRUCK. A RELATED FACTOR WAS: FAILURE OF OPERATOR/MANAGEMENT PERSONNEL TO FOLLOW PROPER LOADING PROCEDURES, WHICH RESULTED IN AN IMPROPER LATERAL WEIGHT AND BALANCE SITUATION.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ANC89IA071
- Event ID
- 20001213X28217
- Case number
- ANC89IA071
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: b59d3284c740e01203ad73c1edc8e276864dac37dc038a12f665e39e1c90d67a; retrieved 2026-09-18T19:11:45.003Z.