# NTSB MKC90LA039: Beech 80, N525GT, Cape Girardeau, MO, December 13, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: December 13, 1989, 12:30 local (18:30 UTC)
- Place: Cape Girardeau, MO
- Coordinates: 37.34098, -89.570884 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.3410&lon=-89.5709&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report June 16, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 34919
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC90LA039
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34919/pdf
- Page: https://openairdocs.org/ntsb/MKC90LA039

## Probable cause

AN INOPERATIVE LANDING GEAR EXTENSION SYSTEM DUE TO FAILURE OF AN ELECTRIC MOTOR AND A MISPLACED EMERGENCY CRANK HANDLE.

## Sequence of events

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

- Airframe/component/system failure/malfunction, takeoff - initial climb
  - electrical system,electric motor - failure,total (cause)
  - landing gear,normal retraction/extension assembly - inoperative (cause)
  - landing gear,emergency extension assembly - inoperative (cause)
- Complete gear collapsed, landing - roll

## Analysis

THE PILOT SAID THAT WHEN HE DEPARTED ON A PERSONAL CROSS COUNTRY TRIP, THE LANDING GEAR FAILED TO RETRACT COMPLETELY. HE CONTINUED HIS TRIP. AFTER ARRIVING AT HIS DESTINATION, HE WAS UNABLE TO GET A SAFE GEAR INDICATION AND WAS UNABLE TO LOWER THE GEAR BY EMERGENCY PROCEDURES. LOW PASSES PAST THE TOWER CONFIRMED ALL THREE WHEELS WERE DOWN, BUT THE NOSE GEAR APPEARED NOT TO BE IN POSITION. A LANDING WAS MADE. DURING THE ROLL-OUT, ALL THREE GEAR LEGS COLLAPSED.  A POST- ACCIDENT INVESTIGATION REVEALED THE GEAR MOTOR WAS BURNED OUT AND THE LANDING GEAR EMERGENCY PUMP WAS INOPERATIVE DUE TO A MISPLACED CRANK HANDLE.

## Aircraft

- Registration: [N525GT](https://openairdocs.org/deregistered/N525GT-2002-10-28), registration cancelled 2002-10-28, S/N LD-421, built 1969 (OpenAirDocs)
- Reported make and model: BEECH 80
- Registry model: [Beech 65-B80](https://openairdocs.org/model/beech-65-b80) (registry code 1152812) (OpenAirDocs)
- Registry engine: [Lycoming IGSO-540-B1A](https://openairdocs.org/engine/lycoming-igso-540-b1a) (registry code 41535, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: LD421
- Airframe hours: 5600
- Engines: LYCOMING IGSO-540-A1D 380 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Carpenter, William M., Jr.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, January 16, 1988, 100 hours before
- Departed: PDK, ATLANTA, GA
- Destination: CGI
- Airport: CGI, Cape Girardeau, runway 20, 3,996 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 58; private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 3,500 total, 3,500 as pilot in command, 20 in the last 90 days, 8 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 190° at 12 knots
- Visibility: 15 statute miles
- Lowest ceiling: 12,000 ft broken
- Temperature: 32 °F, dew point 12 °F
- Altimeter: 30.00 inHg
- Observed at: CGI

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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