# NTSB NYC93LA086: Pitts S1T, N200ST, Halifax, MA, April 18, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 18, 1993, 15:35 local (19:35 UTC)
- Place: Halifax, MA
- Location: 41.9912° N, 70.8620° W: Placed by OpenAirDocs: center of Halifax, MA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.9912&lon=-70.8620&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report November 19, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 37311
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC93LA086
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/37311/pdf
- Page: https://openairdocs.org/ntsb/NYC93LA086

## Probable cause

DETACHMENT OF THE THROTTLE CABLE AT THE FUEL INJECTOR ARM.  SOFT TERRAIN IN THE EMERGENCY LANDING AREA WAS A RELATED FACTOR.

## Sequence of events

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

- Loss of engine power, maneuvering
  - throttle/power lever,cable - disconnected (cause)
- Forced landing, descent - emergency
- Nose over, landing - roll
  - terrain condition - soft (contributing factor)

## Analysis

THE PILOT SAID, DURING AEROBATIC MANEUVERS, THE ENGINE LOST POWER AND HE COULD NOT MAINTAIN ALTITUDE.  HE ELECTED TO MAKE A FORCED LANDING IN A SOD FIELD AND THE AIRPLANE NOSED OVER DURING THE GROUND ROLL WHEN THE MAIN GEAR SANK INTO THE SOFT GROUND.  EXAMINATION OF THE THROTTLE CLEVIS TERMINAL REVEALED THAT IT HAD DISCONNECTED FROM THE INJECTOR ARM.

## Aircraft

- Registration: N200ST (not matched to a registry record)
- Reported make and model: PITTS S1T
- Category: Airplane
- Serial number: 1005
- Airframe hours: 798
- Engines: LYCOMING AEIO-360-A1E 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: James Thompson
- Registered owner: James Thompson
- Airworthiness certificate: Special, Experimental (Special); Standard, Aerobatic
- Last inspection: Annual, July 15, 1992, 28 hours before
- Departed: PYM
- Destination: PYM

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; commercial, flight instructor; airplane ratings: single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 2,700 total, 37 in this make and model, 2,500 as pilot in command, 60 in the last 90 days, 20 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 300° at 10 knots, gusting 20
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 61 °F

## 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 19930418009459A](https://openairdocs.org/incident/19930418009459A), Apr 18, 1993: Child S1TPITTS, Halifax, MA, Substantial damage. Lost partial power. Nosed over landing in soft field. Throttle had disconnected. No castle nut. Cotter pin broke.

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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