This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Tuesday 17 January 2023 |
| Time: | |
| Type: |  ATR 72-202(F) |
| Owner/operator: | West Atlantic UK |
| Registration: | G-NPTF |
| MSN: | 192 |
| Year of manufacture: | 1990 |
| Total airframe hrs: | 5264 hours |
| Cycles: | 583 flights |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Other fatalities: | 0 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | near East Midlands Airport, Castle Donington, Leicestershire -
 United Kingdom
|
| Phase: | Approach |
| Nature: | Cargo |
| Departure airport: | Belfast International Airport (BFS/EGAA) |
| East Midlands Airport (EMA/EGNX) | |
| Investigating agency: | AAIB |
| Confidence Rating: |  Accident investigation report completed and information captured |
West Atlantic UK flight NPT-07C, an ATR 72-202(F), was on a CAT II automatic approach to East Midlands Airport (EMA) when the aircraft suffered suffered a significant electrical malfunction. This caused the loss of the co-pilot’s flight instrument displays and triggered a number of warnings and cautions. The crew executed a go-around and diverted to Birmingham International Airport.
The aircraft remained on the ground for a week and returned to service on January 25th 2023.
Conclusion
A wiring defect on the DC Gen 2 speed sensor resulted in rapidly changing erroneous signals being sent to the GCU. This resulted in the rapid opening and closing of contactor 23PA in response to these inputs and, due to the rapidly fluctuating conditions, the BTC entered a self-protection mode and remained open for the remainder of the flight.
As a consequence of the above, the crew lost a significant number of instruments and systems during the final phases of a CAT II approach in reduced visibility at night. The power distribution anomalies also resulted in a number of spurious and potentially distracting EGPWS aural alerts. The crew conducted a go-around and, following a temporary loss of
communications and permanent loss of autoflight capability, manually flew the aircraft to Birmingham Airport where it landed without further incident.
The wiring defect was probably caused by incorrect use of wire stripping tools at the third-party organisation that had overhauled the starter-generator.
The starter-generator manufacturer and the overhaul organisation have identified a number of safety actions they intend to take to prevent a reoccurrence.
Accident investigation:
 |
|
Sources:
1. https://bea.aero/en/investigation-reports/notified-events/detail/serious-incident-to-an-atr-72-on-17-01-2023-near-nottingham/
2. https://www.flightradar24.com/data/aircraft/g-nptf
History of this aircraft
Other occurrences involving this aircraft
| 7 March 2023 | G-NPTF | West Atlantic UK | 0 | near Belfast | |
non |
Media:
Aerospatiale ATR 72-102(F) of West Atlantic UK at East Midlands-EMA, Leics.,27/05/22.Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-May-2024 09:55 | ASN | Updated [Total occupants, Narrative, Accident report] |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation