Friday, July 20, 2018

Runway Excursion: Piper PA-28-181, N9267H, accident occurred July 19, 2018 at Peterson Field Airport (15WI), Oregon, Dane County, Wisconsin

Federal Aviation Administration / Flight Standards District Office; Milwaukee, Wisconsin

Aviation Accident Factual Report - National Transportation Safety Board: 

Investigation Docket - National Transportation Safety Board:

Location: Oregon, WI
Accident Number: GAA18CA432
Date & Time: 07/19/2018, 1400 CDT
Registration: N9267H
Aircraft: Piper PA28
Aircraft Damage: Substantial
Defining Event: Runway excursion
Injuries: 1 None
Flight Conducted Under: Part 91: General Aviation - Personal 

According to the pilot, she had flown from her home airfield to another airport to receive instrument training. The departure to, and arrival at, the other airport had been uneventful, however during the training she and the instructor noted that the left brake was less effective than the right brake. The brakes had been serviced two days prior to the flight. Following the training, she returned to her home airport, and during landing on the wet grass runway, she aborted the landing because there was insufficient runway to safely stop the airplane.

During the second landing she touched down with about 2/3 of the 2,600-foot-long runway remaining. During the landing roll she ensured that the throttle was in the idle position, and she retracted the flaps, and applied aft pressure to the yoke.

She applied the foot brakes and then the hand brake, and again noted that the left brake was less effective than the right, but the airplane continued to slide on the wet grass. The airplane overran the runway and encountered a drainage culvert. Subsequently, the right wing struck a barn, and the left wing struck a trailer.

The airplane sustained substantial damage to both wing's spars and ribs.

According to the Federal Aviation Administration, Aviation Safety Inspector that examined the airplane, there had been a pool of hydraulic fluid on the ground that appeared to be consistent with an O-ring failure or displacement. He affirmed that although degraded, the brake would have been functional yet requiring a pumping action by the pilot to build pressure within the brake line.

Two days prior to the accident, the pilot's grandfather noticed that the airplane had a "soft left brake." He flew the airplane to a maintenance facility and the brakes were serviced by adding brake fluid to the brake system and the brakes were bled. The grandfather flew the airplane home and was satisfied with the brake operation.

Pilot Information

Certificate: Private
Age: 22, Female
Airplane Rating(s): Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: 3-point
Instrument Rating(s): None
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 3 Without Waivers/Limitations
Last FAA Medical Exam:07/02/2015 
Occupational Pilot: No
Last Flight Review or Equivalent: 08/18/2017
Flight Time:   (Estimated) 191 hours (Total, all aircraft), 138 hours (Total, this make and model), 136 hours (Pilot In Command, all aircraft), 48.4 hours (Last 90 days, all aircraft), 10.7 hours (Last 30 days, all aircraft), 1.9 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: Piper
Registration: N9267H
Model/Series: PA28 181
Aircraft Category: Airplane
Year of Manufacture: 1996
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 2843027
Landing Gear Type: Tricycle
Seats: 4
Date/Type of Last Inspection: 04/01/2018, Annual
Certified Max Gross Wt.: 2550 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 3394.7 Hours at time of accident
Engine Manufacturer: Lycoming
ELT: C126 installed, not activated
Engine Model/Series: O-360-A1D
Registered Owner: Peterson Aviation Llc
Rated Power: 180 hp
Operator: Peterson Aviation Llc
Operating Certificate(s) Held:None 

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: KMSN, 866 ft msl
Distance from Accident Site: 13 Nautical Miles
Observation Time: 1853 UTC
Direction from Accident Site: 14°
Lowest Cloud Condition:
Visibility:  10 Miles
Lowest Ceiling: Broken / 11000 ft agl
Visibility (RVR):
Wind Speed/Gusts: 10 knots /
Turbulence Type Forecast/Actual: /
Wind Direction: 190°
Turbulence Severity Forecast/Actual: /
Altimeter Setting: 29.91 inches Hg
Temperature/Dew Point: 24°C / 14°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Watertown, WI (RYV)
Type of Flight Plan Filed: None
Destination: Watertown, WI (RYV)
Type of Clearance: None
Departure Time:  CDT
Type of Airspace:Class G 

Airport Information

Airport: Peterson Field (15WI)
Runway Surface Type: Grass/turf
Airport Elevation: 978 ft
Runway Surface Condition: Wet
Runway Used: 9
IFR Approach: None
Runway Length/Width: 2600 ft / 150 ft
VFR Approach/Landing: Full Stop 

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion:None 
Total Injuries: 1 None
Latitude, Longitude:  42.927500, -89.418056 (est)

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