Saab-Scania Ab (Saab) 340B N245AE
31 August 1992 · Chattanooga, Tennessee, United States · No injuries
Summary
On 31 August 1992 at about 19:50 local time, a Saab-Scania Ab (Saab) 340B registered N245AE, operated by Flagship Airlines, Inc., was involved in an incident near Chattanooga, Tennessee, United States. 25 people were on board and nobody was injured. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 19:50
- Classification
- Incident
- Location
- Chattanooga, Tennessee, United States
- Coordinates
- 35.0007, -85.2299
- Aircraft
- Saab-Scania Ab (Saab) 340B
- Registration
- N245AE
- Category
- Airplane
- Engines
- 2
- Operator
- Flagship Airlines, Inc.
- Operating rule
- Part 121: Air Carrier
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Route
- Nashville → Atlanta
- Aircraft damage
- Not recorded
- Weather
- VMC
- Light
- Day
- NTSB number
- ATL92IA169
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 25 | 0 | 0 | 0 | 25 |
Probable cause
THE FAILURE AND SUBSEQUENT SEIZURE OF THE REDUCTION GEAR BOX, AND THE FAILURE OF THE PROPELLER CONTROL UNIT AS A RESULT OF CONTAMINATED OIL SUPPLY WHICH IS SHARED WITH THE GEAR BOX.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE FLIGHT WAS CRUISING AT AN ALTITUDE OF 15,000 FEET. THE FLIGHT CREW OBSERVED THE PROPELLER OIL PRESSURE FOR THE LEFT ENGINE RISE ABOVE THE RED LINE, AND SHUT THE ENGINE DOWN. THE FLIGHT WAS OVER CHATTANOOGA, TENNESSEE, AND THE PILOT ELECTED TO LAND AT CHATTANOOGA. THE FLIGHT CREW UNSUCCESSFULLY ATTEMPTED SEVERAL TIMES TO FEATHER THE PROPELLER. THE FLIGHT CREW REPORTED THAT AT SOME POINT, PRIOR TO EXITING THE RUNWAY AFTER LANDING, THE AIRCRAFT PROPELLER HAD STOPPED ROTATING. EXAMINATION OF THE PROPELLER GEAR BOX REVEALED THAT THE GEAR BOX WAS SEIZED AS A RESULT OF A FAILURE WITHIN THE GEAR BOX. EXAMINATION OF THE PROPELLER CONTROL UNIT REVEALED THAT THE UNIT WAS FAILED TO PITCHLOCK AS A RESULT OF CONTAMINATED OIL SUPPLY FROM THE GEAR BOX. VELOCITY MINIMUM CONTROL WITH A NON ROTATING PROPELLER HAS NOT BEEN DETERMINED FOR THIS AIRCRAFT.
Quoted verbatim from the NTSB record.
Other Saab-Scania Ab (Saab) 340 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 3 Jan 1993 | Saab-Scania Ab (Saab) 340A | Hibbing, Minnesota, United States | Express I | No injuries | - |
| 10 Nov 1990 | Saab-Scania Ab (Saab) 340A | Memphis, Tennessee, United States | Heleasco Twenty Four, Inc. | No injuries | - |
| 2 Feb 1994 | Saab-Scania Ab (Saab) 340B | New Roads, Louisiana, United States | - | Minor injuries | - |
| 17 Nov 1995 | Saab-Scania Ab (Saab) 340B | Corsicana, Texas, United States | Simmons Airlines | No injuries | - |
| 24 Oct 1988 | Saab-Scania Ab (Saab) 340A | Springfield, Missouri, United States | - | No injuries | - |
| 11 Jul 1996 | Saab-Scania Ab (Saab) 340A | Providence, Rhode Island, United States | Business Express Airlines | Serious injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 8 Jan 1992 | Cessna 177B | Memphis, Tennessee, United States | Cleary, Peter J. | Fatal | 1 |
| 12 Jan 1992 | Beechcraft J-35 | Knoxville, Tennessee, United States | Webster, Gordon | No injuries | - |
| 2 Feb 1992 | Cessna 152 | Shelbyville, Tennessee, United States | C & G Aircraft Sales, Inc. | No injuries | - |
| 15 Mar 1992 | Beechcraft A36 | Mt. Pleasant, Tennessee, United States | Snyder, Michael C. | Serious injuries | - |
| 29 Mar 1992 | Cessna U206G | Lafayette, Tennessee, United States | Buckner Aviation, Inc. | No injuries | - |
| 25 Jul 1992 | Burkhart Grob G103 | Knoxville, Tennessee, United States | Robert L. Davis | Serious injuries | - |