Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Irving, Texas
Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdf
Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms
http://registry.faa.gov/N5331B
Accident Number: CEN16LA259
Date & Time: 07/07/2016, 2030 CDT
Registration: N5331B
Aircraft: CESSNA 152
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Personal
Analysis
While performing touch-and-go landings, the private pilot noticed that the ground run was longer than usual and that the airplane had difficultly climbing. He saw that the flaps were still at 30° despite the flap handle being in the "up" position. The pilot then maneuvered to land, but the airplane was higher than normal while approaching the runway. He slipped the airplane down, and the airplane floated down the runway. After the airplane touched down near the end of the runway, the pilot applied the brakes, but he then lost directional control, and the airplane exited the side of the runway. The nosewheel got stuck in the soil, and the airplane nosed over, coming to rest inverted.
Examination of the flap assembly revealed that the flap tube assembly on the flap actuator motor was fully extended and bound. The tube assembly was freed mechanically, and the flap actuator motor was then able to move the tube assembly normally. Further examination did not reveal a reason why the tube assembly had become bound. No anomalies were noted with the jackscrew or the flap actuator motor.
It is likely that the pilot was confused by the airplane's performance with 30° of flaps while on the approach because it was not what he was used to and that the bound flaps prevented him from getting the airplane to achieve sufficient airspeed for a proper approach and landing, which led to the unstabilized approach and long landing. The pilot's subsequent uneven application of braking resulted in the runway excursion.
Probable Cause and Findings
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's unstabilized approach and uneven braking due to insufficient runway remaining, which resulted in a loss of directional control during landing. Contributing to the accident was the bound flap jackscrew, which jammed the flaps and led to the pilot's inability to operate the airplane normally.
Findings
Aircraft
Directional control - Not attained/maintained (Cause)
TE flap actuator - Malfunction (Factor)
Personnel issues
Aircraft control - Pilot (Cause)
Factual Information
According to the pilot, on the third touch-and-go to runway 18 at KXBP, the ground run was longer and the airplane had difficultly climbing away from the runway. He saw that the flaps were still at 30° despite the flap handle being in the up position. The pilot then maneuvered to land to runway 36 at KXBP, but was higher than normal while approaching the runway. He slipped the airplane down and the airplane floated down the runway. The airplane touched down near the end of the runway and the when the brakes were applied, the pilot lost control of the airplane. Swerving left and right, the airplane exited the side of the runway. The nose wheel got stuck in the soil and the airplane nosed over coming to rest inverted.
The flap actuator motor, jackscrew, and flap tube assembly were sent to Textron Aviation for an examination. Under the auspices of inspectors from the Federal Aviation Administration, the jackscrew was unboxed and examined. The flap tube assembly on the flap actuator motor was found fully extended and bound. The tube assembly was freed mechanically, and the flap actuator motor was able to move the tube assembly normally. Further examination did not find a reason for why the tube assembly had become bound. No anomalies were detected with the jackscrew or the flap actuator.
Pilot Information
Certificate: Private
Age: 21, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: Unknown
Instrument Rating(s): None
Second Pilot Present: Yes
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 1 Without Waivers/Limitations
Last FAA Medical Exam: 03/11/2014
Occupational Pilot: No
Last Flight Review or Equivalent:
Flight Time: 115 hours (Total, all aircraft), 11 hours (Total, this make and model), 39 hours (Pilot In Command, all aircraft), 11 hours (Last 90 days, all aircraft), 11 hours (Last 30 days, all aircraft), 3 hours (Last 24 hours, all aircraft)
Aircraft and Owner/Operator Information
Aircraft Manufacturer: CESSNA
Registration: N5331B
Model/Series: 152 NO SERIES
Aircraft Category: Airplane
Year of Manufacture: 1979
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 15283839
Landing Gear Type: Tricycle
Seats: 2
Date/Type of Last Inspection: Unknown
Certified Max Gross Wt.: 1676 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time:
Engine Manufacturer: LYCOMING
ELT:
Engine Model/Series: O-235-L2C
Registered Owner: US AVIATION GROUP LLC
Rated Power: 110 hp
Operator: On file
Operating Certificate(s) Held: None
Meteorological Information and Flight Plan
Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: KXBP, 851 ft msl
Observation Time: 2035 CDT
Distance from Accident Site: 0 Nautical Miles
Direction from Accident Site: 174°
Lowest Cloud Condition: Clear
Temperature/Dew Point: 32°C / 22°C
Lowest Ceiling: None
Visibility: 10 Miles
Wind Speed/Gusts, Direction: 9 knots, 160°
Visibility (RVR):
Altimeter Setting: 29.85 inches Hg
Visibility (RVV):
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: DENTON, TX (DTO)
Type of Flight Plan Filed: None
Destination: BRIDGEPORT, TX (XBP)
Type of Clearance: VFR
Departure Time: 1945 CDT
Type of Airspace:
Airport Information
Airport: BRIDGEPORT MUNI (XBP)
Runway Surface Type: Asphalt
Airport Elevation: 863 ft
Runway Surface Condition: Dry
Runway Used: 36
IFR Approach: None
Runway Length/Width: 4004 ft / 60 ft
VFR Approach/Landing: Full Stop
Wreckage and Impact Information
Crew Injuries: 2 None
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude: 33.180278, -97.828611 (est)
14 CFR Part 91: General Aviation
Accident occurred Thursday, July 07, 2016 in Bridgeport, TX
Aircraft: CESSNA 152, registration: N5331B
Injuries: 2 Uninjured.
This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
On July 7, 2016, about 2030 central daylight time, a Cessna 152 airplane, N5331B, was damaged during a landing at the Bridgeport Municipal Airport (KXBP), Bridgeport, Texas. The private rated pilot and pilot rated passenger were not injured and the airplane was substantially damaged. The airplane was registered to US Aviation Group LLC and was operated by a private individual under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed for the flight, which operated without a flight plan. The flight originated from Denton Enterprise Airport (KDTO), Denton, Texas, about 1945.
According to the pilot, on the third touch-and-go to runway 18 at KXBP, the ground run was longer and the airplane had difficultly climbing away from the runway. He noticed the flaps were still at 30-degrees despite the flap handle being in the up position. The pilot made a 180-degree turn to land on runway 36. After the airplane landed the pilot applied the brakes, the airplane swerved and exited the side of the runway. The nose wheel dug in the soil and the airplane nosed over coming to rest inverted.
The airplane was retained for further examination.
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