Individually Owned: 150,657
Corporate Owned: 137,281
Portland International Airport
Aircraft Accident/Incident Report
Portland, Oregon 97218
Tuesady, March 6, 2001 7:40 PST
NTSB Narrative Summary Released at Completion of Accident
Horizon Air flight 2325, a de Havilland DHC-8-102, on a scheduled 14CFR121 flight sustained an engine fire in a Pratt & Whitney (P&W) PW120A engine while on approach to Portland International airport, Portland, Oregon. An engine examination and teardown determined that the #5 bearing assembly had failed. Additional examination ascertained that the P2.5/P3 switching valve to rear inlet case sealing air tube had become disconnected, and the NL probe port sealing tube had melted, allowing an oil fed fire outside of the engine casing and into the engine compartment. Investigation determined that the engine had not been placed on oil consumption and daily chip detector examination by company maintenance as required by the engine maintenance manual following a loss of oil event approximately 180 hours previous to the fire. Additionally, the mandatory implementation of P&W service bulletin 20914, which addressed the P2.5/P3 switching valve to rear inlet case sealing air tube and NL probe port sealing tube was not carried out by the company, nor was it required, as the FAA airworthiness directive making the service bulletin mandatory did not include the PW120A engine. The investigation also revealed that the company mandated implementation of P&W service bulletin 21446R3, was not carried out during an earlier hot section inspection and immediately preceding the earlier oil loss event.
NTSB Probable Cause Narrative
The failure of the number 5 engine bearing assembly followed by the disconnection of the P2.5/P3 switching valve to rear inlet case sealing air tube and the melting of the NL probe port (sealing tube) which allowed an oil fed fire beyond the constraints of the engine casing and into the engine nacelle. A contributing factor was the company's failure to follow several maintenance procedures within the maintenance manual after a previous oil loss event. A second factor was the omission of the PW120A engine from the airworthiness directive issued by the FAA which mandated the completion of Pratt & Whitney service bulletin 20914. The lack of inclusion of the PW120A engine in the AD resulted in the company’s correct interpretation that the service bulletin was not mandatory.
Event Information
| Type of Event | Accident |
| Event Date | 3/6/2001 |
| Event Day of the Week | Tuesday |
| Time of Event | 740 |
| Event Time Zone | Pacific Standard Time |
| Event City | Portland |
| Event State | OREGON |
| Event Country | -- |
| Zipcode of the event site | 97218 |
| Event Date Year | 2001 |
| Event Date Month | 3 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| Event Location Airport | Portland International |
| Event Location Nearest Airport ID | KPDX |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 30 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 755 Pacific Standard Time |
| Direction of event from weather observation facility (degrees) | 280 |
| Weather Observation Facility ID | PDX |
| Elevation of weather observation facility | 30 |
| Distance of event from weather observation facility (units?) | 4 |
| Time Zone of the weather observation | PST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 8 |
| Air Temperature at event time (in degrees celsius) | 6 |
| Dew Point at event time (in degress fahrenheit) | 5 |
| Wind Direction (degrees magnetic) | 260 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 4 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.17 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 33 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 12410 |
| NTSB Notification Source | |
| NTSB Notification Date | Mar 6 2001 12:00AM |
| NTSB Notification Time | 758 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Nov 4 2002 9:07AM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Hillsboro FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N822PH |
| NTSB Number | SEA01FA059 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 121: Air Carrier |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | In-flight |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | de Havilland |
| Aircraft Model | DHC-8-102 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 106 |
| Certified Max Gross Weight | 34500 |
| 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 | 40 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | Jan 29 2001 12:00AM |
| Airframe hours since last inspection | 180 |
| Airframe Hours | 31435 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | First Security Bank NA Trustee |
| Aircraft Owner Street Address | 79 South Main, Suite 300 (3rd Floor) |
| Aircraft Owner City | Salt Lake City |
| Aircraft Owner State | UT |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 84111 |
| Operator is an individual? | No |
| Operator Name | Horizon Air Industries, Inc. |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 19521 International Blvd. |
| Operator City | Seattle |
| Operator State | WA |
| Operator Country | USA |
| Operator Zip code | 98188 |
| Operator Code | QXEA |
| Owner has at least one certificate | -- |
| Other Operator of large aircraft? | -- |
| Certified for Part 133 or 137 Operation | -- |
| 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/Cargo |
| Type of Flying (Per_Bus / Primary) | -- |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | SEA |
| Departure City | Seattle |
| Departure State | WA |
| Departure Country | USA |
| Departure Time | 650 |
| Departure Time Zone | PST |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | PDX |
| Destination City | Portland |
| Destination State | OR |
| Destination Country | USA |
| Specific Phase of Flight | Approach |
| Report sent to ICAO? | Yes |
| Evacuation occurred | Yes |
| Date of most recent change to record | May 2 2002 7:53PM |
| User who most recently changed record | STAM |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 10R |
| Runway Length | 11000 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |