ERA22LA146

NTSB accident investigation · Beech A35 · Waco, GA · March 6, 2022

Accident · No injuriesClass 3 · LimitedFinal report
Date
March 6, 2022, 10:15 local (15:15 UTC)
Place
Waco, GA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N764BBeech A35
Defining event
Enroute: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20220306003679A
Case key
104731

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

On this page

Probable cause

The failure of the fuel pressure indicator line due to corrosion that was not detected during the last annual inspection, which resulted in a total loss of engine power.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Fuel system: fuel pressureAircraft › Aircraft systems · FailureBeech A35: 1 caseAll aircraft: 16 casesProbable cause
Misc hardware: hoses and tubesAircraft › Fluids/misc hardware · Not serviced/maintainedBeech A35: 1 caseAll aircraft: 40 cases

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported that during the cross-country flight, the engine began to lose power and as he attempted to regain power, he noted a decrease in fuel pressure. The engine then lost all power, and the pilot made a forced landing on a road. Postaccident examination of the airplane found that the aluminum fuel line from the fuel indicator to the carburetor had ruptured. Additionally, minor corrosion was present around the ruptured area. Based on this information, it is the likely that this corrosion ultimately resulted in the rupture of the fuel line and loss of engine power. Additionally, the airframe maintenance manual prescribed that all fuel lines should have been inspected during the airplane’s most recent annual inspection, which had occurred 8 months and 22 flight hours prior to the accident. Had the corrosion been detected, and the fuel line replaced at that time, it is likely that the loss of engine power would not have occurred.

Factual narrative

On March 6, 2022, about 1015 eastern standard time, a Beech A35, N764B, was substantially damaged when it was involved in an accident near Waco, Georgia. The commercial pilot and passenger were not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot reported that during the short cross-country flight, the engine began to lose power. As he attempted to regain power, he noticed that the fuel pressure indication fell to zero. The engine stopped producing power and he elected to perform an emergency landing to a road. During the approach to land, the airplane collided with power lines over the road before landing. The pilot exited the airplane and when he opened the engine cowling, he discovered a leaking fuel line. Examination of the airplane by a Federal Aviation Administration inspector revealed structural damage to the vertical stabilizers and fuselage. Examination of the fuel pressure indicator revealed the fuel line connecting the indicator to the carburetor ruptured. When fuel was supplied to the line, it was subsequently observed leaking from the rupture in the line. The line was removed for further examination, and during the examination visible signs of minor corrosion were discovered around the rupture. A review of the Beech 35 shop manual showed that all fuel lines should be inspected for condition during 100-hour or annual inspections. The fuel line that ruptured was made of a soft aluminum alloy material. Review of the engine and airframe maintenance logbook records indicated that an annual inspection was completed about 8 months prior to the accident. The airplane had accumulated 22 flight hours since the last annual inspection.

Aircraft

Registration
N764B
Reported as
Beech A35 (NO SERIES)
Category
Airplane
Serial number
D-1772
Built
1948
Airframe hours
5,212
Engine
Continental E185, 205 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Hoskins Terry W
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 17, 2021 · 22 hours before
Departed
HSV · Huntsville, AL
Destination
GA2 · Williamson, GA
Flight plan
VFR
Equipment
ADS-B, Handheld GPS, Onboard weather, Stall warning system

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
46
Injuries
None
Certificates
Commercial, Private
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Seat
Left
Flight hours
1,108 total · 639 in this make and model · 1,054 as pilot in command · 6 in the last 90 days · 1 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 57 °F
Altimeter
30.21 inHg
Observed at
HSV
METAR
METAR KHSV 061553Z 22010KT 10SM SCT075 22/14 A3021 RMK AO2 SLP222 T02220144

Docket · 6

The files NTSB released with the investigation on September 20, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 22.3 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.