# NTSB MIA91FA020: Aero Commander 680V, N541F, Fort Lauderdale, FL, November 3, 1990

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: November 3, 1990, 10:25 local (15:25 UTC)
- Place: Fort Lauderdale, FL
- Coordinates: 26.18927, -80.170394 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=26.1893&lon=-80.1704&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report August 5, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 32736
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA91FA020
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32736/pdf
- Page: https://openairdocs.org/ntsb/MIA91FA020

## Probable cause

THE PILOT-IN-COMMAND'S DECISION TO CONTINUE TAKEOFF WITH A KNOWN DEFICIENCY IN THE AIRPLANE - LOW POWER ON BOTH ENGINES WHICH RESULTED FROM OPEN COMPRESSOR SURGE VALVES. THE PILOT SUBSEQUENTLY FAILED TO MAINTAIN AIRSPEED WHILE MANEUVERING IN A TURN RESULTING IN AN IN-FLIGHT LOSS OF CONTROL AND A STALL/SPIN.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(partial) - mech failure/malf, takeoff
  - all engines
  - bleed air system,valve - open (cause)
  - operation with known deficiencies in equipment - intentional, pilot in command (cause)
- Loss of control - in flight, approach - vfr pattern - base turn
  - airspeed(vso) - not maintained, pilot in command (cause)
  - stall/spin - inadvertent, pilot in command
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - water

## Analysis

THE AIRPLANE HAD NOT FLOWN SINCE JUNE, 1989. THE FLIGHT HAD MADE 2 HIGH-SPEED TAXI OPERATIONS BEFORE TAKEOFF. IMMEDIATELY AFTER TAKEOFF THE FLIGHT CALLED TO LAND. THE AIRPLANE WAS OBSERVED ON DOWNWIND 200-800 FT AGL, 15-25 DEG NOSE HIGH. THE AIRPLANE THEN STALLED. THE COMPRESSOR SURGE VALVES FOR THE LEFT AND RIGHT ENGINES WERE FOUND IN THE OPEN POSITION.

## Aircraft

- Registration: [N541F](https://openairdocs.org/deregistered/N541F-1990-12-12), registration cancelled 1990-12-12, S/N 160945 (OpenAirDocs)
- Reported make and model: AERO COMMANDER 680V
- Registry model: [Aero Commander 680V](https://openairdocs.org/model/aero-commander-680v) (registry code 0141714) (OpenAirDocs)
- Category: Airplane
- Serial number: 1609-45
- Airframe hours: 6288
- Engines: GARRETT TPE 331-43H 575 horsepower turbo prop
- Damage: Destroyed
- Flight: Part 91
- Operator: Bobadilla, Pastor
- Registered owner: Bryan, Mack L. Jr.
- Last inspection: Unknown, May 3, 1988
- Airport: Fort Lauderdale Executive

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 47; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; toxicology performed; flight hours: 1,100 total

## Weather

- Conditions: Visual (VMC), Day
- Wind: 80° at 17 knots
- Visibility: 5 statute miles
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °F
- Observed at: FXE, 1 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19901103048519A](https://openairdocs.org/incident/19901103048519A), Nov 3, 1990: Gulstm 680V, Ft Lauderdale, FL, Destroyed, 2 fatal. Stalled and fell into lake on test flight. Engines not capable full power due to open surge valves and cabin air on

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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