MIA98LA117

NTSB accident investigation · Beech F33A · Fort Pierce, FL · April 2, 1998

Accident · No injuriesLimited investigationFinal report
Date
April 2, 1998, 14:00 local (19:00 UTC)
Place
Fort Pierce, FL
Injuries
1 uninjured
Damage
Destroyed
Phase of flight
Enroute
Aircraft
DECTBBeech F33A
Weather
Visual (VMC) · Day
Status
Completed · report February 11, 2000
Report
Approved by Office Director
Case key
38485

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

a loss of engine power due to fuel leakage at the fuel control, resulting in a forced landing, and subsequent impact with trees.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine powerClimb
Fuel system,fuel control - leakCause
Forced landingEmergency descent/landing
In flight collision with objectEmergency descent/landing
Object - tree(s)

Analysis

The flight had departed runway 14, and had reached an altitude of about 200 feet, when the pilot reported a loss of engine power. The pilot elected to make a forced landing straight ahead into trees. After impact, the pilot closed off the fuel valve. Examination of the wreckage after the accident revealed that the fuel tanks had fuel. The pilot said the fuel selector was on the left tank when the loss of power occurred. Observation of the engine at the crash site did not reveal any obvious discrepancies. The engine was removed from the airframe and examined at the NTSB's request, and under the supervision of the FAA, on June 24, 1998. The engine examination revealed that the fuel control system exhibited fluid leakage at the fuel pump and throttle shaft. Detailed examination of the fuel pump showed that the pump leaked fluid at the rear high speed adjusting needle at the seal to the pump body. There was no evidence of impact damage observed on the fuel pump. In addition, the throttle/metering unit leaked fluid at the throttle shaft into the metering unit. The leak at the throttle shaft was severe enough that no flow test was possible. The throttle arm displayed impact damage. The throttle shaft was removed from the unit, and the 'O' ring seal was found flat from wear. The 'O' ring was replaced and the leakage stopped. The unit was then flow tested to manufacturer's standards. No other discrepancies were found during the engine examination

Factual narrative

On April 2, 1998, about 1400 eastern standard time, a Beech F33A, D-ECTB (German), registered to a private individual, operating as a Title 14 CFR Part 91 local personal flight, impacted with trees during a forced landing near Fort Pierce, Florida. Visual meteorological conditions prevailed, and no flight plan was filed. The airplane was destroyed. The private-rated pilot was not injured. The flight was originating from the Fort Pierce Airport at the time.

The flight had departed runway 14, and had reached an altitude of about 200 feet, when the pilot reported a loss of engine power. The pilot elected to make a forced landing straight ahead into trees. After impact, the pilot closed off the fuel valve. Examination of the wreckage after the accident revealed that the fuel tanks had fuel. The pilot said the fuel selector was on the left tank when the loss of power occurred.

Observation of the engine at the crash site did not reveal any obvious discrepancies. The engine was removed from the airframe and shipped to Continental Motor's facilities, Mobile, Alabama, and examined at the NTSB's request, and under the supervision of the FAA, on June 24, 1998. The engine examination revealed that the fuel control system exhibited fluid leakage at the fuel pump and throttle shaft. Detailed examination of the fuel pump showed that the pump leaked fluid at the rear high speed adjusting needle at the seal to the pump body. There was no evidence of impact damage observed on the fuel pump. In addition, the throttle/metering unit leaked fluid at the throttle shaft into the metering unit. The leak at the throttle shaft was severe enough that no flow test was possible. The throttle arm displayed impact damage. The throttle shaft was removed from the unit, and the "O" ring seal was found flat from wear. The ring was replaced and the leakage stopped. The unit was then flow tested to manufacturer's standards. No other discrepancies were found during the engine examination (see TCM Analytical report Page 3).

At the airplane owner's request, the engine was shipped to Fort Pierce, Florida, on July 23, 1998, directly from TCM, Mobile, Alabama.

Aircraft

Registration
DECTB
Reported as
Beech F33A
Category
Airplane
Serial number
375
Airframe hours
1,257
Engine
Continental IO-520BA, 285 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Dieter H. Knopple
Airworthiness certificate
Standard, Normal
Departed
FPR
Destination
F45 · Palm Beach, FL
Airport
FPR · St. Lucie International, runway 14, 4,756 × 100 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
60
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
1,100 total · 23 in this make and model · 1,100 as pilot in command · 45 in the last 90 days · 21 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
130° at 12 knots
Visibility
12 statute miles
Lowest ceiling
None
Temperature
81 °F
Altimeter
29.00 inHg
Observed at
FPR, 1 nm away