WPR21LA195

NTSB accident investigation · Gulfstream American AA-5B · Hillsboro, OR · May 12, 2021

Accident · No injuriesClass 4 · LimitedFinal report
Date
May 12, 2021, 14:50 local (21:50 UTC)
Place
Hillsboro, OR
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N51LLGulfstream American AA-5B
Defining event
Takeoff-rejected takeoff: Runway excursion
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Western Pacific Region
FAA report
20210512008919A
Case key
103089

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

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Probable cause

The pilot’s delayed remediation following an aborted takeoff run, which resulted in a runway overrun and collision with trees.

Findings · 4

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.

Performance/control parameters: surface speed/brakingAircraft › Aircraft oper/perf/capability · Not attained/maintainedGulfstream American AA-5B: 1 caseAll aircraft: 238 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Contributed to outcomeGulfstream American AA-5B: 1 caseAll aircraft: 933 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, he was on a long cross-country flight and had stopped at several airports along the way. He reported that during a takeoff run, he accelerated to rotation speed and heard the stall warning horn oral alert when he attempted to lift the nosewheel off the ground. The pilot elected to abort the takeoff as the airplane did not appear to be accelerating sufficiently. At the time, the airplane was about halfway down the runway. According to the pilot, as there was between 800-1,200 ft of runway remaining at the time, he retarded the throttle and applied some brake pressure, but the airplane did not decelerate as he had anticipated. The pilot recounted that he took his feet off the rudder pedals multiple times to ensure they were correctly placed. He then applied maximum pressure to the brake pedals, but the airplane overran the runway end, traversed a road, and impacted trees. The wings were substantially damaged. The pilot stated that the brake system did not perform as he had anticipated. However, postaccident examination of the brake system did not reveal any anomalies. Further, the pilot reported that he did not experience any abnormalities with the brakes when he used them to stop at other airports during other legs of the cross-country flight.

Aircraft

Registration
N51LL
Reported as
Gulfstream American AA-5B
Category
Airplane
Serial number
AA5B0916
Built
1978
Airframe hours
5,213.4
Engine
Lycoming O-360-A4K, 180 hp, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Santa Barbara Flying Club
Registered owner
Santa Barbara Flying Club
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 10, 2020 · 328.8 hours before
Destination
TIW · Tacoma, WA
Flight plan
VFR
Airport
7S3 · Stark'S Twin Oaks Airpark, runway 02/20, 2,465 × 48 ft, asphalt
Equipment
Electronic flight bag or handheld device, Satellite tracking device, Stall warning system, ADS-B, Auto-pilot

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
47
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
BasicMed
Last flight review
March 8, 2020
Seat
Left
Restraint
3-point
Flight hours
488 total · 127 in this make and model · 453 as pilot in command · 27 in the last 90 days · 17 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
50° at 7 knots
Visibility
10 statute miles
Temperature
79 °F, dew point 48 °F
Altimeter
30.07 inHg
Observed at
KHIO, 7 nm away
METAR
KHIO 122153Z 05007KT 10SM CLR 26/09 A3007 RMK AO2 SLP180 T02560089

Docket · 4

The files NTSB released with the investigation on September 1, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 13.1 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.