# NTSB NYC91LA101: Beech 56TC, N7QG, New Haven, CT, April 4, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 4, 1991, 16:35 local (21:35 UTC)
- Place: New Haven, CT
- Location: 41.3108° N, 72.9250° W: Placed by OpenAirDocs: center of New Haven, CT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.3108&lon=-72.9250&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report July 13, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 36899
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC91LA101
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/36899/pdf
- Page: https://openairdocs.org/ntsb/NYC91LA101

## Probable cause

FAILURE OF THE PILOT TO MAINTAIN DIRECTIONAL CONTROL AFTER THE NOSE WHEEL STEERING SYSTEM FAILED.

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - landing gear,steering system - disabled (contributing factor)
  - directional control - not maintained, pilot in command (cause)
- On ground/water collision with object, landing - roll
  - object - sign
- Nose gear collapsed, landing - roll
  - landing gear,nose gear - overload

## Analysis

AFTER PRACTICING A SIMULATED RIGHT ENGINE OUT APPROACH, THE PILOT BROUGHT BOTH ENGINES TO IDLE POWER SETTINGS AND CONTINUED HIS APPROACH TO LAND ON RUNWAY 20.  DURING THE LANDING AND ROLLOUT, DIRECTIONAL CONTROL WAS NOT MAINTAINED. THE AIRPLANE ROLLED LEFT OF THE RUNWAY CENTERLINE AND DEPARTED THE RUNWAY HITTING A SIGN AND COLLAPSING THE NOSE GEAR.  EXAMINATION OF THE NOSE GEAR ASSEMBLY REVEALED SEVERE IMPACT DAMAGE FROM THE SIGN. EXAMINATION OF THE NOSE GEAR STEERING COLLAR REVEALED THREE ATTACHED BOLTS WERE SHEARED.  THE INVESTIGATION DID NOT DETERMINE THE FAILURE MODE OF THESE BOLTS.

## Aircraft

- Registration: [N7QG](https://openairdocs.org/aircraft/N7QG), registered now, S/N TG-56, built 1967 (OpenAirDocs)
- Reported make and model: Beech 56TC
- Registry model: [Beech 56TC](https://openairdocs.org/model/beech-56tc) (registry code 1152736) (OpenAirDocs)
- Registry engine: [Lycoming TI0-541 series](https://openairdocs.org/engine/lycoming-ti0-541-series) (registry code 41536, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: TG-56
- Airframe hours: 2541
- Engines: LYCOMING TIO-541-E1B4 380 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Ralph J. Markson, doing business as Weather Corp.
- Registered owner: Ralph J. Markson
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, January 2, 1991, 20 hours before
- Airport: HBN, Tweed New Haven, runway 2, 5,600 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 3,839 total, 973 in this make and model, 3,718 as pilot in command, 2 in the last 90 days, 2 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 6 statute miles
- Lowest ceiling: none
- Temperature: 57 °F
- Altimeter: 30.00 inHg

## 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 19910404012049A](https://openairdocs.org/incident/19910404012049A), Apr 4, 1991: Beech 56TC, New Haven, CT, Substantial damage. Veered to left on landing roll. Unable to correct. Struck light and sign off runway. Steering attach bolts failed.

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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