- Date
- January 23, 1989, 13:44 local (21:44 UTC)
- Place
- Seattle, WA
- Injuries
- 14 uninjured
- Damage
- Minor damage
- Phase of flight
- Takeoff
- Aircraft
- N386PHFairchild SA-227-AC
- Weather
- Visual (VMC) · Day
- Status
- Completed · report August 26, 1992
- Report
- Approved by Office Director
- FAA report
- 19890123005429I
- Case key
- 40943
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.
On this page
Probable cause
Inoperative nosewheel steering due to improper maintenance. Contributing to the incident was the lack of adequate maintenance information available in the aircraft manuals.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
While on takeoff roll, the cpt turned the electric nose wheel steering off. The first officer, flying the acft, announced an uncommanded right yaw. The cpt took the controls but was not able to bring the acft to a halt before departing the side of the runway. Post mishap tests revealed a malfunction of the nose wheel steering due to improper replacement of valves in the hydraulic steering actuator unit.
Aircraft
- Registration
- N386PH
- Reported as
- Fairchild SA-227-AC
- Category
- Airplane
- Serial number
- 597
- Airframe hours
- 8,404
- Engines
- Garrett TPE-331, 1,000 horsepower, turbo propGarrett TPE-331, 1,000 horsepower, turbo prop
- Damage
- Minor damage
- Flight
- Part 135
- Operator
- Horizon Air
- Registered owner
- First Security Bank Of Utah
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Continuous airworthiness · January 14, 1989 · 52 hours before
- Destination
- PDX · Portland, OR
- Flight plan
- IFR
- Airport
- SEA · Seatac, runway 16, 11,900 × 150 ft, concrete
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
- 32
- Certificate
- Airline transport
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 6,500 total · 3,000 in this make and model · 5,000 as pilot in command · 240 in the last 90 days · 80 in the last 30 days · 5 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 160° at 7 knots
- Visibility
- 15 statute miles
- Lowest ceiling
- None
- Temperature
- 37 °F, dew point 30 °F
- Altimeter
- 30.00 inHg
- Observed at
- SEA
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.