Hughes 369E N570CA
25 August 2000 · Coolin, Idaho, United States · No injuries
Summary
On 25 August 2000 at about 21:30 local time, a Hughes 369E registered N570CA was involved in an accident near Coolin, Idaho, United States. 3 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 21:30
- Classification
- Accident
- Location
- Coolin, Idaho, United States
- Nearest airport
- Cavanaugh Bay (66S)
- Coordinates
- 48.6006, -116.8591
- Aircraft
- Hughes 369E
- Registration
- N570CA
- Category
- Helicopter
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 135: Air Taxi & Commuter
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Route
- Unknown → Nordman
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- SEA00LA170
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 3 | 0 | 0 | 0 | 3 |
Probable cause
The turbine outlet temperature indicating system was out of calibration. Factors included improper maintenance calibration, which resulted in the over temperature of the turbine assembly.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
Shortly after takeoff, the engine lost power. The pilot initiated an emergency running landing, which resulted in the main rotor blades contacting and subsequently severing the tail boom during the landing phase. The engine and associated components were inspected. The turbine outlet temperature (TOT) indicating system was inspected to verify calibration, which is to be calibrated inspected during all 300-hour inspections. The test revealed that the TOT indicated on the cockpit gage was below actual engine outlet temperatures, and that lower than actual TOT readings provided to the pilot via the cockpit TOT gage may have resulted in numerous operations being conducted in higher temperature ranges than that authorized by the Pilot's Flight Manual and/or the engine manufacturers temperature limitations. The engine teardown inspection confirmed that the failures and stress ruptures found throughout the engine turbine assembly components were a result of high temperature engine operation above 2000F.
Quoted verbatim from the NTSB record.
Other Hughes 369 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 14 Feb 2000 | Hughes 369HS | Pacific Ocean | - | No injuries | - |
| 10 Jun 2000 | Hughes 369A | Hampton, Georgia, United States | Gregory D. Norred | Minor injuries | - |
| 6 Mar 2000 | Hughes 369D | Dallas, North Carolina, United States | - | No injuries | - |
| 6 Dec 2000 | Hughes 369D | Montrose, Colorado, United States | - | No injuries | - |
| 10 Oct 2000 | Hughes 369FF | Baggs, Wyoming, United States | - | Serious injuries | - |
| 18 Jul 2000 | Hughes 369D | Nuuk, Greenland | Greenland Air | Fatal | 1 |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 14 Apr 2000 | Air Tractor AT-401 | Acequia, Idaho, United States | Mallard, Alma D. | Minor injuries | - |
| 25 Jul 2000 | Cessna TU-206G | Pistol Creek, Idaho, United States | - | Fatal | 1 |
| 22 Jun 2000 | Cessna 172M | Wallace, Idaho, United States | Action Flying Service | No injuries | - |
| 11 Aug 2000 | Air Tractor AT-802F | Salmon River, Idaho, United States | - | No injuries | - |
| 21 Sep 2000 | Bell 206-L4 | Atlanta, Idaho, United States | US Forest Service | No injuries | - |
| 10 Nov 2000 | Cessna 425 | Idaho Falls, Idaho, United States | Aerohawk Aviation | Fatal | 2 |