ASN Wikibase Occurrence # 175414
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| Date: | Friday 10 April 2015 |
| Time: | 14:47 LT |
| Type: |  Boeing 707-338C |
| Owner/operator: | Omega Air Refueling |
| Registration: | N624RH |
| MSN: | 19624/689 |
| Year of manufacture: | 1968 |
| Engine model: | Pratt & Whitney JT3D-3B |
| Fatalities: | Fatalities: 0 / Occupants: 5 |
| Aircraft damage: | Minor |
| Location: | near Victorville, CA -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Ferry/positioning |
| Departure airport: | Point Magu NAS (KNTD) |
| SoCal Logistics (KVCV) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
On April 10, 2015, about 1500 PDT, Omega Air Refueling Boeing 707, N624RH, experienced an uncontained release of turbine material from the No. 1 engine, a Pratt & Whitney JT3D, during the climb. The airplane was being ferried as a Part 91 repositioning flight from KNTD to KBQK (Brunswick, GA) to replace the No. 1 engine because of excessive oil consumption.
After departure from Pt. Mugu Naval Air Station, California, a heavy vibration was felt in engine No. 1 as the airplane was climbing through 17,000 feet. The engine was shut down at FL 210. The pilots reported that parts could be seen exiting the turbine section of the engine. The airplane landed at Victorville, California without further incident. The examination of the engine revealed damage to the turbine blades and several holes in the turbine exhaust case. In addition, there was hole in the engine cowl and a small puncture in the underside of the left outboard aileron trim tab. There were no injuries to the 5 persons on board.
The National Transportation Safety Board determines the probable cause(s) of this incident as follows:
the fracture of one 1st stage turbine blade from a high cycle fatigue crack that originated from a break in the coating on the leading edge of the blade. The cause for the break in the coating could not be determined. Contributing to the uncontained release of turbine material was the yielding and rupture of the turbine exhaust case wall after turbine debris collected at probes in the case.
Accident investigation:
 |
|
Sources:
NTSB
http://www.airport-data.com/aircraft/N624RH.html
[LINK NOT WORKING ANYMORE:http://australianaviation.com.au/2011/10/former-raaf-707s-flown-out-by-omega/]
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Apr-2015 15:04 | Geno | Added |
| 21-Apr-2015 08:29 | Chieftain | Updated [Aircraft type] |
| 06-May-2015 20:38 | Aerossurance | Updated [Time, Aircraft type, Nature, Source, Narrative] |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 01-Apr-2017 10:46 | Aerossurance | Updated [Time, Location, Narrative] |
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