Air Tindi Flight 503
Beechcraft Super King Air 200 and Unknown · Loss of control
Event
- 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
- Event fatalities
- 2 · all aircraft and ground
- Ground fatalities
- Unknown
- Occupants
- Unknown
- Survivors
- 0
- InjuriesFatal: death within 30 days. Serious: over 48 hours in hospital within a week, most broken bones, severe bleeding, nerve or organ damage, or serious burns. Minor: anything less. Glossary
- 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
- Airline
Aircraft 1 · Beechcraft Super King Air 200
- Aircraft type
- Beechcraft Super King AIR-200
- Category
- Airplane · from aircraft type
- 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
- C-GTUC
- Operator
- Air Tindi
- Onboard fatalities
- Unknown
- Route
- From Yellowknife International Airport (YZF)To Ekati Airport, Northwest Territories, Canada
Aircraft 2 · Unknown
- 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
- Unknown
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From not recordedTo not recorded
Cause areas
- Aircraft › Aircraft systems
- Personnel issues › Action/decision
- Personnel issues › Miscellaneous
- Personnel issues › Psychological
- Personnel issues › Experience/knowledge
From the investigation findings the Wikipedia article reports, sorted into the NTSB's cause areas with AI assistance.
Not plotted · Not plotted: the Wikipedia article gives no coordinates, and its site names no town or airport that matches exactly.
From the Wikipedia article
Air Tindi Flight 503 (flight number IATA: 8T503, ICAO: TIN503, callsign: TINDI 503) was a regional domestic flight of Air Tindi from Yellowknife to Whatì. On 30 January 2019 the flight was operated with a Beechcraft Super King Air 200. During the approach to Whatì Airport, control of the aircraft was lost, and it then crashed to the ground and broke apart. The two pilots – the only occupants on the flight – were killed in the accident.
Accident sequence
On that day the aircraft was to operate a flight from Yellowknife to Ekati with intermediate stops in Whatì and Weekweèti, followed by a return flight on the same route. The aircraft was towed out of the hangar at 7:45 in the morning and refuelled. The pilots then entered the cockpit and began working through the departure checklists. In doing so, the first officer noticed that his vacuum-driven artificial horizon (attitude indicator) was not in the zero position as intended. The captain assured the first officer that the artificial horizon would reactivate during the flight, and the pilots continued their takeoff preparations. The aircraft lifted off from Yellowknife Airport at 08:51. While the pilots were working through the checklist in the initial climb, it turned out that the first officer's artificial horizon was still not working. The captain suggested to the first officer that he tap the artificial horizon to check whether it was stuck. The first officer replied that the artificial horizon was still not erecting.
While flying at flight level 120, the pilots tried to fix the fault in the right attitude indicator, but without success.
At 09:11, after the start of the descent, the captain's attitude indicator on the left instrument panel displayed a red “GYRO” warning symbol and the autopilot disengaged. The captain then began flying the aircraft manually with partial instrument panel. The aircraft continued to descend and the captain tried to initiate a climb. The aircraft climbed briefly before it began to descend again. It then entered a left bank, which developed into a steep, descending left turn (graveyard spiral), from which the pilots were no longer able to recover the aircraft.
Investigation and cause
Cause
The investigation found that, for an unexplained reason, the captain's attitude indicator had also failed in flight. By relying on the first officer's attitude indicator reactivating in flight, the pilots, in particular the captain, carried out a takeoff in disregard of the minimum equipment list, and did so under instrument meteorological conditions. The crew's crew resource management had been ineffective, which led to a breakdown in verbal communication, a loss of situational awareness and entry into an unsafe flight condition.
The captain and the first officer probably suffered spatial disorientation. The captain had had no recent experience of flying with partial instrument panel, so that the remaining instruments were not used effectively and the aircraft went out of control and into a spiral dive.
After the aircraft had broken through the cloud layer at about 2000 feet above the ground, the crew was unable to regain control of the aircraft in time and at sufficient altitude to prevent an impact with the ground. The investigators found that both the captain and the first officer had an iPad mini with the ForeFlight Mobile app, which provided both pilots with a backup attitude display and synthetic vision. Since this was a backup function, Air Tindi had no formal training programme for the use of ForeFlight's attitude and heading reference system (AHRS).
Translated into English with AI assistance from the German Wikipedia article “Air-Tindi-Flug 503” (revision 263931244, retrieved 2026-09-19) by its authors, under CC BY-SA 4.0. Extracted as plain text: references, tables, images and some sections are left out; the translation may contain errors, and long articles were cut to their first 700 words. Read the article
Sources
German Wikipedia article: Air-Tindi-Flug 503
- Article
- Air-Tindi-Flug 503
- Translation
- Into English with AI assistance; names of linked operators and aircraft types from Wikidata. It may contain errors.
- Revision
- 263931244 · 2026-02-02 · retrieved 2026-09-19
- Wikidata
- Q137970435
- Licence
- Text CC BY-SA 4.0, by the article's authors; Wikidata CC0; town positions GeoNames (CC BY 4.0)
Where each value comes from
- Record
- de Wikipedia article "Air-Tindi-Flug 503" (page 13424994, revision 263931244), translated into English with AI assistance
- Date
- Wikipedia infobox: date
- Place and country
- Wikipedia infobox: site
- Map position
- none
- Aircraft, operator and route
- Wikipedia infobox: aircraft type, registration, operator, origin and destination; route airports from the linked airport articles' Wikidata codes (OurAirports)
- Operation
- flight number in the article title
- Fatalities
- Wikipedia infobox: total_fatalities
- Ground fatalities
- not stated in the Wikipedia infobox
- Summary
- Wikipedia article lead
Source notes (1)
- Wikipedia · Facts from the German Wikipedia article's infobox, translated into English with AI assistance, not checked against an investigation report. Independent review pending.