# NTSB MIA90LA097: Cessna 150L, N19599, Vieques, PR, March 30, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 30, 1990, 15:25 local (19:25 UTC)
- Place: Vieques, PR
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report March 5, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 32642
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA90LA097
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32642/pdf
- Page: https://openairdocs.org/ntsb/MIA90LA097

## Probable cause

FAILURE OF PACKING AROUND THE CARBURETOR ACCELERATOR PUMP, WHICH HAD JAMMED THROTTLE MOVEMENT AND WOULD NOT ALLOW AN INCREASE IN ENGINE RPM ABOVE IDLE.

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, descent - normal
  - fuel system,carburetor - failure,partial (cause)
- Forced landing, descent - emergency
- Ditching, landing
  - terrain condition - water

## Analysis

THE INSTRUCTOR PILOT (CFI) TOOK CONTROL OF THE AIRPLANE OVER WATER WHEN THE STUDENT PILOT STATED THAT HE COULD NOT GET THE ENGINE ABOVE IDLE POWER. THE INSTRUCTOR COULD NOT EITHER AND DITCHED THE AIRPLANE. AFTER THE AIRPLANE WAS RECOVERY FROM THE WATER, AN EXAM OF THE CARBURETOR REVEALED THAT THE PACKING AROUND THE ACCELERATOR PUMP HAD JAMMED THE PUMP.

## Aircraft

- Registration: [N19599](https://openairdocs.org/deregistered/N19599-2009-08-13), registration cancelled 2009-08-13, S/N 15074520, built 1973 (OpenAirDocs)
- Reported make and model: CESSNA 150L
- Registry model: [Cessna 150L](https://openairdocs.org/model/cessna-150l) (registry code 2071826) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 15074520
- Airframe hours: 7746
- Engines: CONTINENTAL O-200-A48B 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Registered owner: Roosevelt Roads Flying Club
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, March 23, 1990, 16 hours before
- Departed: TJNR, ROOSEVELT ROADS, PR
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; commercial, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: right; flight hours: 6,500 total, 160 in this make and model, 3,000 as pilot in command, 128 in the last 90 days, 35 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 140° at 5 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 82 °F, dew point 64 °F
- Altimeter: 29.00 inHg
- Observed at: TJNR, 11 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 19900330008959A](https://openairdocs.org/incident/19900330008959A), Mar 30, 1990: Cessna 150L, Vieques, Puerto Rico, Substantial damage. Engine failed to respond after simulated forced landing. Ditched in ocean. Crab float and accelerator pump stuck.

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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