# NTSB NYC91LA216: Cessna TU206G, N756UF, Block Island, RI, August 22, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 22, 1991, 12:30 local (16:30 UTC)
- Place: Block Island, RI
- Location: 41.1918° N, 71.5745° W: Placed by OpenAirDocs: center of Block Island, RI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.1918&lon=-71.5745&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report April 8, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 36994
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC91LA216
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/36994/pdf
- Page: https://openairdocs.org/ntsb/NYC91LA216

## Probable cause

IMPROPER PLANNING/DECISION BY THE PILOT BY ELECTING TO TAKEOFF WITH A KNOWN DEFICIENCY WITH THE EQUIPMENT. THE DEFICIENCY (CRACKED/LEAKING FLOAT) WAS A RELATED FACTOR.

## Sequence of events

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

- Nose over, takeoff - aborted
  - operation with known deficiencies in equipment - intentional, pilot in command (cause)
  - landing gear,float assembly - cracked (contributing factor)
  - terrain condition - water
  - landing gear,float assembly - leak (contributing factor)

## Analysis

THE PILOT LANDED HIS AMPHIBIOUS PLANE IN A HARBOR.  WHILE TAXIING TO THE DOCK, THE PLANE STRUCK A SUBMERGED OBJECT WITH THE LEFT FLOAT.  THE PILOT PULLED THE AIRPLANE UPON THE BEACH, CHECKED THE FLOAT AND FOUND A CRACK.  HE PUMPED THE FLOAT DRY AND MADE A DECISION TO TAKEOFF.  HOWEVER, HE ABORTED THE TAKEOFF, WHEN HE NOTED THE LEFT FLOAT WAS FILLING WITH WATER.  SUBSEQUENTLY, THE LEFT FLOAT DIPPED UNDER THE WATER AND THE AIRPLANE NOSED OVER.

## Aircraft

- Registration: [N756UF](https://openairdocs.org/deregistered/N756UF-2019-09-05), registration cancelled 2019-09-05, S/N U20604361, built 1978 (OpenAirDocs)
- Reported make and model: CESSNA TU206G
- Registry model: [Cessna TU206G](https://openairdocs.org/model/cessna-tu206g) (registry code 2073357) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: U20604361
- Engines: CONTINENTAL TSIO-520-M 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Roebling Aviation
- Registered owner: Roebling Aviation
- Last inspection: Unknown, January 2, 2000
- Destination: BID, BLOCK ISLAND, RI

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 47; commercial; airplane ratings: single-engine sea, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 5,990 total, 1,500 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 20 statute miles

## 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 19910822036219A](https://openairdocs.org/incident/19910822036219A), Aug 22, 1991: Cessna TU206G, Block Island, RI, Substantial damage. Landed amphibian in harbor. Left float hit object. Taxied to beach. Noted crack. Tried takeoff. Float sank. Upset.

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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