Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Olympia, Washington 98501
Wednesday, May 23, 1990 8:30 PDT
NTSB Narrative Summary Released at Completion of Accident
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.
NTSB Probable Cause Narrative
DUE TO AN ICE BUILD-UP DEPARTING THE PROPELLER AND STRIKING THE CABIN WINDOW.
Event Information
| Type of Event | Incident |
| Event Date | 5/23/1990 |
| Event Day of the Week | Wednesday |
| Time of Event | 830 |
| Event Time Zone | Pacific Daylight Time |
| Event City | OLYMPIA |
| Event State | WASHINGTON |
| Event Country | -- |
| Zipcode of the event site | 98501 |
| Event Date Year | 1990 |
| Event Date Month | 5 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | |
| Event Location Nearest Airport ID | |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | -- |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Pilot |
| Time of the weather observation | 0 |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | |
| Elevation of weather observation facility | 0 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Unknown |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 0 |
| Air Temperature at event time (in degrees celsius) | -- |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 0 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 0 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | -- |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | 1 |
| Injury Total None | 19 |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 5009 |
| NTSB Notification Source | -- |
| NTSB Notification Date | May 23 1990 12:00AM |
| NTSB Notification Time | 930 |
| Fiche Number and/or location -used to find docket information | 41819 |
| Date of most recent change to record | Dec 12 2000 4:59PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Unknown |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N27442 |
| NTSB Number | SEA90IA085 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Minor |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | FAIRCHILD |
| Aircraft Model | SA227 |
| Aircraft Series Identifier | SA227 |
| Aircraft Serial Number | AC-750 |
| Certified Max Gross Weight | 14500 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 20 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | May 17 1990 12:00AM |
| Airframe hours since last inspection | 36 |
| Airframe Hours | 675 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | INVESTORS ASSET HOLDING CORP. |
| Aircraft Owner Street Address | EXCHANGE PL53 STATE ST. |
| Aircraft Owner City | BOSTON |
| Aircraft Owner State | MA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 02109 |
| Operator is an individual? | -- |
| Operator Name | HORIZON AIRLINES |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 5515 NE TRANSPORT WAY |
| Operator City | PORTLAND |
| Operator State | OR |
| Operator Country | |
| Operator Zip code | 97218 |
| Operator Code | QXEA |
| Owner has at least one certificate | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Unknown |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | Scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Passenger Only |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | PDX |
| Departure City | PORTLAND |
| Departure State | OR |
| Departure Country | |
| Departure Time | 805 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | SEA |
| Destination City | SEATTLE |
| Destination State | WA |
| Destination Country | |
| Specific Phase of Flight | Descent |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:30AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 0 |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |