Island Airlines Flight 400
Cessna 402C · Accident: loss of control in flight on approach
From Cape Cod Gateway Airport (HYA) to Nantucket Memorial Airport (ACK)
Event
- NTSB case
- NYC03FA203
- 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
- Accident
- 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
- 1 · all aircraft and ground
- Ground fatalities
- Unknown
- 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
- Charter & commuter
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Instrument Meteorological Cond
Cessna 402C
- Aircraft type
- Cessna 402
- 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
- N405BK
- Operator
- Island Airlines
- Onboard fatalities
- Unknown
- Route
- From Cape Cod Gateway Airport (HYA), Hyannis, MATo Nantucket Memorial Airport (ACK), Nantucket, MA
- 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 135: Air Taxi & Commuter
- 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
- Approach · IFR missed approach
- 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
- Loss of control in flight
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Pilot in command › Aircraft control, not maintained
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The pilot was conducting an instrument landing system approach during night instrument meteorological conditions. The airplane was observed to descend toward the runway threshold to an altitude consistent with the approach decision height. A witness reported that he heard the airplane overhead, and assumed that the pilot had performed a missed approach. He described the engine noise as "cruise power" and did not hear any unusual sounds. Shortly thereafter, he received a call from airport operations stating that an airplane had crashed. The airplane impacted the ground about 1/4 mile to the left of the runway centerline, about 3,500 feet beyond the approach end of the runway. Examination of the airplane did not reveal any pre-impact mechanical malfunctions. A weather observation taken around the time of the accident, included a visibility 1/2 statue mile in fog, and an indefinite ceiling at 100 feet. The witness described the weather at the time of the accident as thick fog, and "pitch black."
Probable cause
The pilot's failure to maintain aircraft control during a missed approach. Factors in this accident were fog and the night light conditions.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record NYC03FA203
- Event ID
- 20031001X01633
- Case number
- NYC03FA203
- 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, coordinates. 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: 16638d500da7509af4e69bc896594a960513193e6e18ad52252277c8fb173d88; retrieved 2026-09-18T13:01:56.763Z.