Individually Owned: 151,845
Corporate Owned: 143,699
Aircraft Accident/Incident Report
Pokhara Nepal
Friday, June 15, 2001 11:08 UTC
NTSB Narrative Summary Released at Completion of Accident
On June 15, 2001, a Cosmic Air Dornier 228-101 experienced a failure of the right engine, a Honeywell TPE331-5B-252D turbo propeller, during a training flight for stall and recovery at Pokhara Airport, Nepal. After inducing the stall, power was applied to both engine for airplane recovery and a loud bang was heard coming from the right engine. A corresponding low oil pressure warning light and a right engine fire light illuminated. The engine was shutdown and an uneventful landing was made. Examination of the right engine revealed that the turbine rotating section had exited the engine. The 1st- and 2nd-stage turbine wheels were recovered separate from the rest of the engine, along with pieces of the tie-shaft and torsion shaft. The 3rd-stage wheel was not recovered. Metallurgical examination of the 1st- and 2nd-stage turbine wheels revealed that the disk rim had separated in overload while the 2nd-stage turbine wheel rim had separated from a low cycle fatigue crack that originated from multiple origins within a rivet hole. Evidence found on the aft side of the 1st- stage wheel and 2nd-stage stators suggest that these parts experienced higher than normal temperatures. Temperatures estimated on the 1st-stage wheel were 1700F and on the 2nd-stage stator in excess of 2000F.
The investigation is under the jurisdiction of the government of Nepal. Further information pertaining to this incident may be obtained from:
Director General of Civil Aviation
Civil Aviation Authority
Babar Mahal
Kathmandu
Nepal
Tel.: (977) 1-262387 / 262518
E-mail: cnsatm@mos.com.np
Fax: (977) 1-262516
AFTN: VNKTYAYX
Telex: 2553 DCA NP
Cable: AIRCIVIL
This report is for informational purposes only and contains only information obtained for, or released by, the Government of Nepal
NTSB Probable Cause Narrative
Not Yet Reported
Event Information
| Type of Event | Incident |
| Event Date | 6/15/2001 |
| Event Day of the Week | Friday |
| Time of Event | 1108 |
| Event Time Zone | Coordinated Universal Time? Same as GMT |
| Event City | Pokhara |
| Event State | -- |
| Event Country | NEPAL |
| Zipcode of the event site | -- |
| Event Date Year | 2001 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| Event Location Airport | -- |
| Event Location Nearest Airport ID | -- |
| Indicates whether the acc/inc occurred off or on an airport | -- |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | -- |
| Weather Briefing Completeness | -- |
| Investigator's weather source | -- |
| Time of the weather observation | |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | -- |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | -- |
| Lighting Conditions | -- |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | -- |
| Sky Condition for Lowest Ceiling | -- |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | -- |
| Air Temperature at event time (in degrees celsius) | -- |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | -- |
| Wind Speed (knots) | -- |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | -- |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | -- |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | -- |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | Foreign |
| NTSB Docket Number (internal use) | -- |
| NTSB Notification Source | |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Mar 4 2008 9:23AM |
| User who most recently changed record | defc |
| Basic weather conditions | -- |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | -- |
| NTSB Number | ENG01RA008 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Non-U.S., Non-Commercial |
| Type of Flight Plan filed | Unknown |
| Flight plan Was Activated? | No |
| Damage | None |
| Aircraft Fire | -- |
| Aircraft Explosion | -- |
| Aircraft Manufacturer's Full Name | Dornier |
| Aircraft Model | 228-101 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | -- |
| Certified Max Gross Weight | -- |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | -- |
| Number of Engines | -- |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | -- |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | -- |
| ELT Activated | -- |
| ELT Aided Location of Event Site | -- |
| ELT Type | -- |
| Aircraft Owner Name | -- |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | -- |
| Aircraft Owner State | -- |
| Aircraft Owner Country | -- |
| Aircraft Owner Zipcode | -- |
| Operator is an individual? | -- |
| Operator Name | -- |
| Operator Same as Owner? | -- |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | -- |
| Operator Street Address | -- |
| Operator City | -- |
| Operator State | -- |
| Operator Country | NP |
| Operator Zip code | -- |
| Operator Code | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | -- |
| Certified for Part 133 or 137 Operation | -- |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Instructional |
| Second Pilot on Board | -- |
| Departure Point Same as Event | No |
| Departure Airport Code | -- |
| Departure City | Pokhara |
| Departure State | -- |
| Departure Country | NP |
| Departure Time | -- |
| Departure Time Zone | -- |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | -- |
| Destination City | Pokhara |
| Destination State | -- |
| Destination Country | NP |
| Specific Phase of Flight | Maneuvering |
| Report sent to ICAO? | Yes |
| Evacuation occurred | No |
| Date of most recent change to record | Mar 4 2008 9:23AM |
| User who most recently changed record | defc |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | -- |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |