# NTSB FTW86FA156: Great Lakes 2T-1A-2, N6198L, Houston, TX, August 30, 1986

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: August 30, 1986, 14:00 local (19:00 UTC)
- Place: Houston, TX
- Coordinates: 29.830484, -95.659378 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=29.8305&lon=-95.6594&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21917
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW86FA156
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21917/pdf
- Page: https://openairdocs.org/ntsb/FTW86FA156

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, takeoff - initial climb
  - induction air control/system - failure,total (cause)
  - maintenance,inspection - inadequate, other maintenance personnel (contributing factor)
- Loss of control - in flight, maneuvering - turn to landing area (emergency)
  - emergency procedure - poor, pilot in command (contributing factor)
  - airspeed - not maintained, pilot in command (cause)
  - stall
- In flight collision with terrain/water, descent - uncontrolled
- Fire, other

## Analysis

THE ENDS OF THE OUTER STRING AND THE INNER REINFORCING WIRE OF THE ENGINE AIR INTAKE DUCT WERE NOT PROPERLY POSITIONED UNDER THE DUCT CLAMP DURING INSTALLATION. AS A RESULT, THEY UNWOUND DURING ENGINE OPERATION AND MOVED OUT OF THEIR NORMAL POSITION ON AND IN THE DUCT RESPECTIVELY. THIS ALLOWED THE WALL OF THE DUCT TO LOSE ITS RIGIDITY AND COLLAPSE WHICH RESULTED IN A LOSS OF ENGINE INTAKE AIR AND SUBSEQUENT POWER FAILURE. THE PILOT ATTEMPTED TO RETURN TO THE AIRPORT WITH ONLY 100 FEET OF ALTITUDE. THE ACFT STALLED DURING THE TURN WITH INSUFFICIENT ALT TO RECOVER BEFORE IMPACT OCCURRED.

## Aircraft

- Registration: [N6198L](https://openairdocs.org/deregistered/N6198L-2018-03-06), registration cancelled 2018-03-06, S/N 0725 (OpenAirDocs)
- Reported make and model: GREAT LAKES 2T-1A-2
- Registry model: [Great Lakes 2T-1A-2](https://openairdocs.org/model/great-lakes-2t-1a-2) (registry code 3910101) (OpenAirDocs)
- Category: Airplane
- Serial number: 0725
- Engines: LYCOMING AEIO-360-B1G6 180 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Personal, Part 91
- Registered owner: William M. Brewer
- Airworthiness certificate: Standard, Normal
- Departed: T86, HOUSTON, TX
- Destination: T41, LA PORTE, TX
- Airport: T86, Lakeside

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; private; airplane ratings: single-engine land, multi-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: front; toxicology performed; flight hours: 500 total

## Weather

- Conditions: Visual (VMC), Day
- Wind: 50° at 6 knots
- Visibility: 12 statute miles
- Lowest ceiling: none
- Temperature: 86 °F, dew point 68 °F
- Altimeter: 30.00 inHg
- Observed at: HOU, 25 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 19860830043169A](https://openairdocs.org/incident/19860830043169A), Aug 30, 1986: Grtlks 2T1A2, Houston, TX, Destroyed. Engine lost power on takeoff. Aircraft stalled and impacted the ground. Suspect collapsed air intake duct.

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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