- Date
- March 2, 1991, 14:45 local (19:45 UTC)
- Place
- Jacksonville, FL
- Injuries
- 5 uninjured
- Damage
- Minor damage
- Phase of flight
- Enroute
- Aircraft
- CGRNUBritish Aerospace BAE-146-200
- Weather
- Instrument (IMC) · Day
- Status
- Completed · report March 31, 1993
- Report
- Approved by Office Director
- Case key
- 32772
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.
On this page
Probable cause
Inadequate engine performance in the designed airplane flight envelopes.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
The flight crew experienced the partial power loss of three of four engines while in cruise flight. The airplane was operating in icing conditions with all airplane anti ice systems on. The flight passed through an area of rapidly warming air and the engine bleed bands were open and could not be closed with throttle movement. The crew shut down two engines to prevent overtemp conditions and reduced one to idle. They declared an emergency and diverted to an airport nearby. Subsequent testing of a like airplane revealed that the engine design was such that when operating at high altitude with all anti ice systems 'on' the bleed air valves could not be closed with normal procedures. The manufacturer subsequently developed a modified checklist to correct for this situation.
Aircraft
- Registration
- CGRNU
- Reported as
- British Aerospace BAE-146-200 (BAE-146-20)
- Category
- Airplane
- Serial number
- 205
- Engine
- Lycoming ALF-502-R, turbo fan
- Damage
- Minor damage
- Flight
- Part 129
- Operator
- Air Nova
- Airworthiness certificate
- Standard, Transport
- Departed
- KMIA · Miami, FL
- Destination
- LYHZ · Halifax, OF
- Flight plan
- IFR
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 30
- Certificate
- Airline transport
- Airplane ratings
- Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Unknown, Unknown
Weather
- Conditions
- Instrument (IMC) · Day
- Wind
- 130° at 4 knots
- Visibility
- 2 statute miles
- Lowest ceiling
- 3,000 ft overcast
- Temperature
- 57 °F, dew point 57 °F
- Altimeter
- 29.00 inHg
- Observed at
- JAX, 15 nm away