Individually Owned: 151,845
Corporate Owned: 143,699
Philadelphia International Airport
Aircraft Accident/Incident Report
Philadelphia, Pennsylvania 19113
Wednesday, March 22, 2006 1:55 EST
NTSB Narrative Summary Released at Completion of Accident
During the takeoff roll, after the pilot disengaged the nose gear steering, the airplane began to turn to the right. The copilot noticed fluctuations with the engine indications, and called for an abort. Power was reduced to idle, and the pilot corrected to the left using left rudder pedal and braking. The airplane turned to the right again, and the pilot corrected to the left. The airplane continued to turn left, and departed the left side of the runway, tail first, and was substantially damaged. The airplane had accrued 18,040.3 total hours of operation. It was powered by two turbofan engines, each equipped with an electronic fuel computer. Examination of the left engine's wiring harness revealed that the outer shielding on the fuel computer harness assembly was loose, deteriorated, and an approximate 3-inch section was missing. Multiple areas of the outer shielding were also chaffed, the ground wire for the shielding was worn through, and the wiring was exposed. Testing of the wiring to the fuel computer connector, revealed an intermittent connection. After disassembly of the connector, it was discovered that the connector pin's wire was broken off at its crimp location. Examination under a microscope of the interior of the pin, revealed broken wire fragments that displayed evidence of corrosion. Simulation of an intermittent electrical connection resulted in N1 spool fluctuations of 2,000 rpm during engine test cell runs. According to the airplane's wiring maintenance manual, a visual inspection of all electrical wiring in the nacelle to check for security, clamping, routing, clearance, and general condition was to be conducted every 300 hours or 12 calendar months. Additionally, all wire harness shield overbraids and shield terminations were required to be inspected for security and general condition every 300 hours or 12 calendar months, and at every 600 hours or 24 calendar months. According to company maintenance records, the wiring had been inspected 6 days prior to the accident.
NTSB Probable Cause Narrative
The operator's inadequate maintenance of the fuel computer harness which resulted in engine surging and a subsequent loss of control by the flight crew during the takeoff roll.
Event Information
| Type of Event | Accident |
| Event Date | 3/22/2006 |
| Event Day of the Week | Wednesday |
| Time of Event | 155 |
| Event Time Zone | Eastern Standard Time |
| Event City | Philadelphia |
| Event State | PENNSYLVANIA |
| Event Country | -- |
| Zipcode of the event site | 19113 |
| Event Date Year | 2006 |
| Event Date Month | 3 |
| MidAir Collision Indicator | -- |
| On Ground Collision occurred ? | -- |
| Event Location Latitude | 395219N |
| Event Location Longitude | 0751428W |
| Event Location Airport | Philadelphia International |
| Event Location Nearest Airport ID | PHL |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 36 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 154 Eastern Standard Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | PHL |
| Elevation of weather observation facility | 36 |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | EST |
| Lighting Conditions | Night |
| Lowest Ceiling Height | 10000 |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | -- |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 2 |
| Dew Point at event time (in degress fahrenheit) | -11 |
| Wind Direction (degrees magnetic) | 330 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 9 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.77 |
| 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 | 2 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 21500 |
| NTSB Notification Source | FAA EROC |
| NTSB Notification Date | Mar 22 2006 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | May 29 2007 12:24PM |
| User who most recently changed record | NTSB\lema |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Philadelphia, PA |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N58EM |
| NTSB Number | NYC06LA081 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Gates Learjet |
| Aircraft Model | 35 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 046 |
| Certified Max Gross Weight | 18300 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 3 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | AAIP |
| Date of Last Inspection | Mar 1 2006 12:00AM |
| Airframe hours since last inspection | 9.7 |
| Airframe Hours | 18040.3 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | 58EM LLC. |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | West Columbia |
| Aircraft Owner State | SC |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 29170 |
| Operator is an individual? | No |
| Operator Name | Bankair Inc. |
| Operator Same as Owner? | No |
| 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 | BKAA |
| 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 | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Cargo |
| Type of Flying (Per_Bus / Primary) | -- |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | Yes |
| Departure Airport Code | PHL |
| Departure City | Philadelphia |
| Departure State | PA |
| Departure Country | USA |
| Departure Time | 155 |
| Departure Time Zone | EST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | CLT |
| Destination City | Charlotte |
| Destination State | NC |
| Destination Country | USA |
| Specific Phase of Flight | Takeoff |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Apr 15 2007 7:31PM |
| User who most recently changed record | MUZD |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | 27L |
| Runway Length | 10506 |
| Runway Width | 200 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |