ASN Wikibase Occurrence # 78829
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: | Saturday 23 October 2010 |
| Time: | 14:50 |
| Type: |  Agusta A109A Mk II |
| Owner/operator: | N2NR Inc |
| Registration: | N2NR |
| MSN: | 7350 |
| Year of manufacture: | 1986 |
| Engine model: | Allison 250-C20 SER |
| Fatalities: | Fatalities: 3 / Occupants: 3 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Leitrim Lodge, Shanlieve, Mourne Mountains, Northern Ireland -
 United Kingdom
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Enniskillen, Northern Ireland (EGAB) |
| Caernarfon Airport, Wales (EGCK) | |
| Investigating agency: | AAIB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter was destroyed on 23-10-2010 when it flew into the western slope of Shanlieve in the Mourne Mountains while en route from Enniskillen, Northern Ireland to Caernarfon, Wales. The point of impact was at the 1,936 feet level, 118 feet below the summit of the mountain. The accident happened in daylight (14:48 Local time) and in general VMC but the mountains were shrouded in fog and cloud. All three people on board were fatally injured in the impact
Radar data shows that, initially, while en route, the helicopter maintained a constant altitude of about 1,600 feet on a track of 130 degrees at a ground speed of approximately 150 knots. When about 8 nautical miles before Newry it turned left onto a heading of 090 degrees and climbed to 2,000 feet with a coincident reduction in air speed to 130 knots, before levelling off and accelerated back to 150 knots. It maintained this heading for a further 6.5 nautical miles This revised track would have taken the helicopter 2 nautical miles north of the northern edge of the Mourne Mountains and the coastal town of Newcastle, County Down.
However, the helicopter turned right to resume a track 130 degrees. It maintained this for a further 3.5 nautical miles before carrying out a series of minor heading changes to the left and right. Shortly after this it impacted the high ground.
The helicopter was equipped with a Honeywell Mk. XXI EGPWS; however, it was found that the unit had not been powered-up since it had been reconfigured with a new software release and terrain database. From the maintenance records for the helicopter, this re-configuring probably occurred during October and November 2009, when this particular replacement Mk. XXI unit was installed.
Accident investigation:
 |
|
Sources:
1. AAIB: https://assets.publishing.service.gov.uk/media/5422eb27ed915d137400005d/Agusta_A109A_II__N2NR_11-11.pdf
NTSB
3. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=2NR
4. http://www.bbc.co.uk/news/uk-northern-ireland-11613622
5. https://www.theguardian.com/uk/2010/oct/24/helicopter-crash-mourne-mountains
6. http://www.ascendworldwide.com/download/Cust/WAAS167_Complete.pdf
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 23-Oct-2010 15:07 | saf7670 | Added |
| 23-Oct-2010 15:16 | Anon. | Updated [Aircraft type, Source, Damage, Narrative, Plane category, ] |
| 24-Oct-2010 02:06 | GARRICKE | Updated [Departure airport] |
| 24-Oct-2010 03:06 | harro | Updated [Aircraft type, Registration, Cn, Total fatalities, Total occupants, Other fatalities] |
| 24-Oct-2010 07:11 | gerard57 | Updated [Total fatalities, Total occupants, Source] |
| 24-Oct-2010 12:19 | lanzaferg | Updated [Country] |
| 24-Oct-2010 12:20 | Anon. | Updated [Location, Country, Phase, Source, Narrative] |
| 25-Oct-2010 14:02 | MarkStep | Updated [Source] |
| 25-Nov-2010 07:56 | rvargast17 | Updated [Time, Operator, Source] |
| 14-Oct-2012 15:28 | Dr. John Smith | Updated [Time, Operator, Location, Nature, Departure airport, Destination airport, Source, Embed code, Narrative] |
| 27-Jan-2013 10:58 | TB | Updated [Time, Source, Embed code, Narrative] |
| 27-Jan-2013 11:03 | TB | Updated [Operator, Narrative] |
| 23-May-2013 23:10 | Dr. John Smith | Updated [Embed code] |
| 02-Jun-2013 16:15 | TB | Updated [Nature, Destination airport, Source, Embed code, Narrative] |
| 07-Jul-2016 01:05 | Dr.John Smith | Updated [Narrative] |
| 24-Nov-2016 19:51 | Dr.John Smith | Updated [Operator, Location, Departure airport, Source, Narrative] |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
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