SEA95IA082

NTSB incident investigation · Fairchild SA-227 · Pasco, WA · April 16, 1995

Incident · No injuriesIncident investigationFinal report
Date
April 16, 1995, 08:05 local (15:05 UTC)
Place
Pasco, WA
Injuries
7 uninjured
Damage
Minor damage
Phase of flight
Enroute
Aircraft
N385PHFairchild SA-227
Weather
Visual (VMC) · Day
Status
Completed · report January 29, 1996
Report
Approved by Office Director
FAA report
19950416011329I
Case key
42071

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

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Probable cause

Improper installation of the rudder trim actuator rod by company maintenance personnel which resulted in binding and fracture of the rod.

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.

Airframe/component/system failure/malfunctionClimb - to cruise
Flt control syst,rudder trim/tab control - binding(mechanical)Cause
Maintenance,installation - improperCompany maintenance personnelCause
Flt control syst,rudder trim/tab control - fracturedCause

Analysis

During climb out, the crew noticed an unusual airframe vibration, and returned to the departure airport. FAA inspectors determined that the rudder trim actuator rod had been improperly installed, allowing it to bind and eventually fracture.

Factual narrative

On April 16, 1995, approximately 0805 Pacific daylight time (PDT), a Fairchild SA-227, N385PH, experienced a failure of a rudder trim rod while climbing out from Tri-Cities Airport, Pasco, Washington. There were no injuries to the two crew members and their five passengers, and the aircraft sustained only minor damage. The FAR Part 135 revenue flight, which was en route to Portland International Airport, Portland, Oregon, was in visual meteorological conditions at the time of the incident. The scheduled passenger flight was on an IFR flight plan, and there was no ELT activation involved in this incident.

According to a representative of Horizon Airlines, the crew noticed an unusual airframe vibration after the departure from Pasco. They therefore elected to return to the Tri-Cities Airport, where they discovered that the rudder trim rod had failed.

FAA inspectors determined that the actuator rod had been improperly installed by company maintenance personnel, and it had been binding before it fractured and failed.

Aircraft

Registration
N385PH
Reported as
Fairchild SA-227
Category
Airplane
Serial number
AC-595
Airframe hours
23,609
Engine
Garrett TPE331-11U-61, 1,000 horsepower, turbo prop
Damage
Minor damage
Flight
Part 135
Operator
Horizon Airlines
Registered owner
First Security Bank Of Utah
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · March 26, 1995 · 85 hours before
Departed
PSC
Destination
PDX · Portland, OR
Flight plan
IFR

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
34
Certificate
Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
5,950 total · 567 in this make and model · 2,686 as pilot in command · 89 in the last 90 days · 23 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.