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| Date: | Saturday 3 August 2024 |
| Time: | 13:00 |
| Type: |  Cirrus SR22T |
| Owner/operator: | Cirrus 23 LLC |
| Registration: | N825JC |
| MSN: | 0752 |
| Year of manufacture: | 2014 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Other fatalities: | 0 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Tulsa International Airport (TUL/KTUL), Tulsa, OK -
 United States of America
|
| Phase: | Standing |
| Nature: | Ferry/positioning |
| Departure airport: | Tulsa-Richard Lloyd Jones Jr. Airport, OK (RVS/KRVS) |
| Tulsa International Airport, OK (TUL/KTUL) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
On August 3, 2024, at 1300 central daylight time, a Cirrus SR22T, N825JC, was involved in an accident near Tulsa, Oklahoma. The airplane sustained substantial damage after the engine was shut down. The pilot was uninjured. The airplane was operated under Title 14 Code of Federal Regulations Part 91 as a ferry flight.
An airframe and powerplant mechanic removed and replaced the airplane’s engine, which included rewiring the two alternators, and performed an engine run-up without incident. A pilot then performed a short ferry flight, also without incident. After parking the airplane at the destination airport and shutting down the engine, the pilot saw smoke coming from the engine compartment. The pilot exited the airplane, looked into the louvered vents under the engine compartment, and saw electrical arcing and smoke, but did not see any fire. The airplane battery and associated wiring sustained thermal damage. The airplane’s composite firewall sustained substantial damage due to thermal damage.
The mechanic who performed the engine replacement took a photograph of the alternator wire connections before removing the original engine, which he used as a reference when rewiring the alternator following the engine replacement. The photograph showed the correct wire connections, but those connections were different than those at the time of the accident. Postaccident examination of the airplane revealed that the alternator wire connections were not done in accordance with the airplane manufacturer’s maintenance manual, which resulted in electrical arcing and substantial thermal damage to the airplane.
Probable Cause: The mechanic’s improper installation of the alternator wiring connections, which resulted in electrical arcing and thermal damage to the airplane.
Editor note: The NTSB states multiple times that the damage is substantial, but incorrectly refers to the event as an incident.
Accident investigation:
 |
|
Sources:
NTSB
https://data.ntsb.gov/Docket?ProjectID=194873
Location
Images:
Photo: Firewall Damage (FAA)
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 23-Aug-2024 16:43 | Captain Adam | Added |
| 06-Jan-2025 19:10 | Captain Adam | Updated [Location, Phase, Source, Damage, Narrative, Photo, ] |
Corrections or additions? ... Edit this accident description
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