ERA22LA132

NTSB accident investigation · Cessna 140 · New Bern, NC · February 11, 2022

Accident · No injuriesClass 4 · LimitedFinal report
Date
February 11, 2022, 11:03 local (16:03 UTC)
Place
New Bern, NC · runway to taxiway
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N2509NCessna 140
Defining event
Landing-landing roll: Sys/Comp malf/fail (non-power)
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20220211001589A
Case key
104685

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 loss of brake pressure on the left brake due to a failed O-ring seal.

Findings · 1

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.

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 his landing roll, he attempted to slow the airplane as he exited the runway for the taxiway. As he applied brakes, the left brake loss pressure and the right brake maintained its pressure and operated normally. This anomaly caused the airplane to ground loop, which resulted in substantial damage to the left wing. Examination of the airplane by a Federal Aviation Administration inspector revealed the left brake master cylinder was void of fluid. Fluid was filled into the master cylinder and when pressure was applied to simulate braking, fluid began to seep from the master cylinder. The master cylinder was disassembled revealing a damaged O-ring seal. The O-ring was pinched and cut; therefore, unable to maintain hydraulic fluid within the master cylinder and resulted in the loss of braking. A review of maintenance records reveal that the braking system was serviced about a month prior, but no anomalies were noted during the service.

Aircraft

Registration
N2509N
Reported as
Cessna 140
Category
Airplane
Serial number
12766
Built
1947
Airframe hours
4,607
Engine
Continental C-85-12F, 85 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 1, 2022 · 11 hours before
Departed
05N · Winterville, NC
Destination
Same as departure
Airport
EWN · Coastal Carolina Rgnl, runway 22, 6,452 × 150 ft, asphalt
Equipment
Handheld GPS

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
72
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
April 1, 2021
Seat
Right
Restraint
Lap only
Flight hours
3,434 total · 123 in this make and model · 3,282 as pilot in command · 20 in the last 90 days · 9 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 25 °F
Altimeter
30.12 inHg
Observed at
EWN
METAR
METAR KEWN 111654Z VRB06KT 10SM CLR 19/M04 A3012 RMK AO2 SLP199 T01941044

Docket · 6

The files NTSB released with the investigation on May 26, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 6.5 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.

Other investigations on N2509N · 1

Matched to the same aircraft by N-number and date.