The National Transportation Safety Board did not travel to the scene of this accident.
Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Greensboro, North Carolina
Investigation Docket - National Transportation Safety Board:
Location: New Bern, North Carolina
Accident Number: ERA22LA132
Date and Time: February 11, 2022, 11:03 Local
Registration: N2509N
Aircraft: Cessna 140
Aircraft Damage: Substantial
Defining Event: Sys/Comp malf/fail (non-power)
Injuries: 2 None
Flight Conducted Under: Part 91: General aviation - Personal
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.
Probable Cause and Findings
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The loss of brake pressure on the left brake due to a failed O-ring seal.
Findings
Aircraft Master cylinder/brake valve - Failure
Factual Information
History of Flight
Landing-landing roll Sys/Comp malf/fail (non-power) (Defining event)
Landing-landing roll Loss of control on ground
Pilot Information
Certificate: Commercial; Flight instructor
Age: 72, Male
Airplane Rating(s): Single-engine land
Seat Occupied: Right
Other Aircraft Rating(s): None
Restraint Used: Lap only
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): Airplane single-engine
Toxicology Performed:
Medical Certification: Class 2 With waivers/limitations
Last FAA Medical Exam: May 11, 2021
Occupational Pilot: No
Last Flight Review or Equivalent: April 1, 2021
Flight Time: (Estimated) 3434 hours (Total, all aircraft), 123 hours (Total, this make and model), 3282 hours (Pilot In Command, all aircraft), 20 hours (Last 90 days, all aircraft), 9 hours (Last 30 days, all aircraft)
Passenger Information
Certificate:
Age: Male
Airplane Rating(s):
Seat Occupied: Left
Other Aircraft Rating(s):
Restraint Used: Lap only
Instrument Rating(s):
Second Pilot Present: No
Instructor Rating(s):
Toxicology Performed:
Medical Certification:
Last FAA Medical Exam:
Occupational Pilot: UNK
Last Flight Review or Equivalent:
Flight Time:
Aircraft and Owner/Operator Information
Aircraft Make: Cessna
Registration: N2509N
Model/Series: 140
Aircraft Category: Airplane
Year of Manufacture: 1947
Amateur Built:
Airworthiness Certificate: Normal
Serial Number: 12766
Landing Gear Type: Tailwheel
Seats: 2
Date/Type of Last Inspection: January 1, 2022 Annual
Certified Max Gross Wt.: 1450 lbs
Time Since Last Inspection: 11 Hrs
Engines: 1 Reciprocating
Airframe Total Time: 4607 Hrs as of last inspection
Engine Manufacturer: Continental
ELT: Installed, not activated
Engine Model/Series: C-85-12F
Registered Owner:
Rated Power: 85 Horsepower
Operator: On file
Operating Certificate(s) Held: None
Meteorological Information and Flight Plan
Conditions at Accident Site: Visual (VMC)
Condition of Light: Day
Observation Facility, Elevation: EWN,17 ft msl
Distance from Accident Site: 0 Nautical Miles
Observation Time: 11:54 Local
Direction from Accident Site: 0°
Lowest Cloud Condition: Clear
Visibility: 10 miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: /
Turbulence Type Forecast/Actual: None / None
Wind Direction:
Turbulence Severity Forecast/Actual: N/A / N/A
Altimeter Setting: 30.12 inches Hg
Temperature/Dew Point: 19°C / -4°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Winterville, NC (05N)
Type of Flight Plan Filed: None
Destination: New Bern, NC
Type of Clearance: None
Departure Time: 10:00 Local
Type of Airspace: Class D
Airport Information
Airport: COASTAL CAROLINA RGNL EWN
Runway Surface Type: Asphalt
Airport Elevation: 17 ft msl
Runway Surface Condition: Dry
Runway Used: 22
IFR Approach: None
Runway Length/Width: 6452 ft / 150 ft
VFR Approach/Landing: None
Wreckage and Impact Information
Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: 1 None
Aircraft Fire: None
Ground Injuries:
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude: 35.07285,-77.0433 (est)
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