Aircraft Accident/Incident Report

West Grove, Pennsylvania 19390
Monday, October 17, 2005 EDT

NTSB Narrative Summary Released at Completion of Accident

The left engine exhaust nozzle and fairing departed the airplane during cruise climb. The flight crew reported hearing a "small thud" while climbing through 15,000 feet msl. The flight crew stated that they monitored the aircraft engines and no anomalies were noted. The flight crew attributed the event to possible wake turbulence and elected to continue to their scheduled destination. During a post-flight inspection the flight crew noticed the left engine exhaust nozzle and fairing were missing. The left engine exhaust nozzle was found about 26.5 nm west-southwest of the departure airport. The nozzle was examined and its attachment hardware was missing. The bolt holes used to install the exhaust nozzle to the engine were elongated and had evidence of fretting. The exhaust nozzle manufacturer issued Service Bulletin CF34-NAC-78-024 on January 24, 2003, to address "exhaust nozzle bolt attachment failures." The service bulletin called for the removal of the existing hardware and replacement with "new, improved hardware." This maintenance was to be completed at the "operator's earliest convenience or within a maximum of 4,000 hours." At the time of the incident, the airplane had accumulated 3,440 hours since new. The service bulletin had not been complied with, according to the maintenance records. The operator immediately inspected their entire fleet of Bombardier CL-600-2B19 regional jets and found three additional aircraft with either missing or loose attachment exhaust nozzle hardware. The operator ordered replacement kits for the entire fleet and will comply with Service Bulletin CF34-NAC-78-024 upon delivery of the replacement parts.

NTSB Probable Cause Narrative

The separation of the left engine exhaust nozzle during cruise climb due to inadequately designed attachment hardware.

Event Information

Type of Event Incident
Event Date 10/17/2005
Event Day of the Week Monday
Time of Event 25
Event Time Zone Eastern Daylight Time
Event City West Grove
Event State PENNSYLVANIA
Event Country --
Zipcode of the event site 19390
Event Date Year 2005
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 395021N
Event Location Longitude 0754901W
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 54 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 90
Weather Observation Facility ID PHL
Elevation of weather observation facility 38
Distance of event from weather observation facility (units?) 25
Time Zone of the weather observation EDT
Lighting Conditions Night
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) 10
Air Temperature at event time (in degrees celsius) 13
Dew Point at event time (in degress fahrenheit) 5
Wind Direction (degrees magnetic) 290
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 11
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 51
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 20145
NTSB Notification Source FAA
NTSB Notification Date Oct 17 2005 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Aug 29 2006 3:49PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Federal Aviation Administration - Cincinnati FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N244PS
NTSB Number CHI06IA011
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? Yes
Damage Minor
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Bombardier, Inc.
Aircraft Model CL-600-2B19
Aircraft Series Identifier --
Aircraft Serial Number 7912
Certified Max Gross Weight 53000
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 53
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours 3440
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name US Airways, Inc.
Aircraft Owner Street Address 2345 Crystal Drive
Aircraft Owner City Arlington
Aircraft Owner State VI
Aircraft Owner Country USA
Aircraft Owner Zipcode 22227
Operator is an individual? No
Operator Name PSA Airlines, Inc.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 3400 Terminal Drive
Operator City Vandalia
Operator State OH
Operator Country USA
Operator Zip code 45377
Operator Code VNAA
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 Only
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code PHL
Departure City Philadelphia
Departure State PA
Departure Country USA
Departure Time 4
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code DAY
Destination City Dayton
Destination State OH
Destination Country USA
Specific Phase of Flight Climb - to cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jun 8 2006 2:52PM
User who most recently changed record SULP
Since inspection or accident Time of Accident
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --