SEA90IA085

NTSB incident investigation · Fairchild SA227 · Olympia, WA · May 23, 1990

Incident · Minor injuriesIncident investigationFinal report
Date
May 23, 1990, 08:30 local (15:30 UTC)
Place
Olympia, WA
Injuries
1 minor, 19 uninjured
Damage
Minor damage
Phase of flight
Enroute
Aircraft
N27442Fairchild SA227
Weather
Day
Status
Completed · report December 30, 1992
Report
Approved by Office Director
FAA report
19900523017069I
Case key
41133

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

Due to an ice build-up departing the propeller and striking the cabin window.

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/malfunctionDescent - normal
Window,cabin - penetratedFactor
Weather condition - icing conditionsCause

Analysis

While descending from 14,000 feet, the second row right side cabin window suddenly blew out. An emergency descent was initiated to the airport where the airplane landed without further incident. The window and frame were inspected and noted that the frame and connecting bolts appeared undamaged. Two indentations were noted on the fuselage just forward of the window and aft of the ice protection plate. Passengers reported that prior to the window blow out, loud bumps or thumps were heard.

Aircraft

Registration
N27442
Reported as
Fairchild SA227
Category
Airplane
Serial number
AC-750
Airframe hours
675
Engine
Garrett TPE311, 1,591 horsepower, turbo prop
Damage
Minor damage
Flight
Part 135
Operator
Horizon Airlines
Registered owner
Investors Asset Holding Corp.
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · May 17, 1990 · 36 hours before
Departed
PDX · Portland, OR
Destination
SEA · Seattle, WA
Flight plan
IFR

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
46
Certificates
Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
5,100 total

Weather

Conditions
Day

FAA reports on this event · 1

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