Individually Owned: 150,657
Corporate Owned: 137,281
Dorval Intl Airport
Aircraft Accident/Incident Report
Montreal Canada
Tuesady, March 6, 2001 6:40 EST
NTSB Narrative Summary Released at Completion of Accident
The auxiliary power unit (APU) ingested deicing fluid and snow and sustained an uncontained turbine failure. The pressure bulkhead sustained minor damage. The airplane was being deiced. Four crew and 40 passengers were uninjured. The YUL weather was: Wind 050 degrees at 25 knots gusting to 33 knots; visibility 15 statute miles; present weather drifting snow; sky condition broken 2,800 feet overcast 7,600 feet; temperature -1 degree C; dew point -5 degrees C; altimeter 29.57 inches of mercury. Honeywell's APU teardown inspection stated, "Evidence of an engine overspeed event with a commanded auto-shutdown was present in the Electronic Control Unit (ECU) non-volatile memory." The report further stated, "In February 2001 American Airlines issued a 'Winterization Bulletin' for the F-100 advising that de-ice spray should not be sprayed into the APU inlet. Additionally, the Fokker 100 maintenance manual section 12-31-00, page 301specifically advises 'Do not let de-icing and/or anti-icing fluid/water mixture go into the APU inlet. Injury to persons and/or damage to equipment can occur.'"
NTSB Probable Cause Narrative
the inaccurate aircraft deicing service the ground personnel performed alowing fluid injestion and the auxiliary power unit's turbine failure while standing. A factor was the auxiliary power unit's overspeed.
Event Information
| Type of Event | Incident |
| Event Date | 3/6/2001 |
| Event Day of the Week | Tuesday |
| Time of Event | 640 |
| Event Time Zone | Eastern Standard Time |
| Event City | Montreal |
| Event State | -- |
| Event Country | CANADA |
| Zipcode of the event site | -- |
| 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 | DORVAL INTL |
| Event Location Nearest Airport ID | YUL |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | 117 |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1200 Eastern Standard Time |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | YUL |
| Elevation of weather observation facility | 117 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | EST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 2800 |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | -- |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 15 |
| Air Temperature at event time (in degrees celsius) | -1 |
| Dew Point at event time (in degress fahrenheit) | -5 |
| Wind Direction (degrees magnetic) | 50 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 25 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 33 |
| Altimeter Setting at event time (in. Hg) | 29.57 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Moderate |
| METAR weather report | 06 1200Z 050@25 G 33Kn 15sm DRSN BKN028 OVC076 m01 |
| 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 | 44 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 10836 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Mar 13 2001 12:00AM |
| NTSB Notification Time | 821 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Nov 1 2001 7:36AM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | FAA AAI-100 |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N1426A |
| NTSB Number | CHI01IA102 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 121: Air Carrier |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | No |
| Damage | Minor |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Fokker |
| Aircraft Model | F28 MK 0100 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 11411 |
| Certified Max Gross Weight | 98000 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/Foreign 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 | Mar 4 2001 12:00AM |
| Airframe hours since last inspection | 2 |
| Airframe Hours | 20553 |
| ELT Installed | Unknown |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | AMERICAN AIRLINES INC |
| Aircraft Owner Street Address | 4333 Amon Carter Blvd |
| Aircraft Owner City | Fort Worth |
| Aircraft Owner State | TX |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 76133 |
| Operator is an individual? | No |
| Operator Name | -- |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | -- |
| Operator State | -- |
| Operator Country | -- |
| Operator Zip code | -- |
| Operator Code | AALA |
| 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 | International |
| Operator carrying Pax/Cargo/Mail | Passenger Only |
| Type of Flying (Per_Bus / Primary) | -- |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | Yes |
| Departure Airport Code | YUL |
| Departure City | Montreal |
| Departure State | -- |
| Departure Country | CA |
| Departure Time | -- |
| Departure Time Zone | EST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | ORD |
| Destination City | CHICAGO |
| Destination State | IL |
| Destination Country | USA |
| Specific Phase of Flight | Standing - engine(s) operating |
| Report sent to ICAO? | Yes |
| Evacuation occurred | No |
| Date of most recent change to record | Oct 16 2001 9:30AM |
| User who most recently changed record | SULP |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | -- |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |