John F Kennedy Intl Airport
Aircraft Accident/Incident Report

Jamaica, New York
Monday, August 31, 1998 22:35 üÇn

NTSB Narrative Summary Released at Completion of Accident

Shortly after takeoff, the No. 2 engine failed and shutdown procedures for the No. 2 engine were accomplished. The flight crew declared an emergency and requested to return to the airport. On approach, an engine out go-around was required as ATC had instructed the flight crew of a B-747 to "position and hold" on the end of the runway. The first officer was the pilot flying. Following an uneventful touchdown, as the airplane slowed to about 80 knots, the captain took control of the airplane. Shortly thereafter, the right main landing gear (MLG) collapsed and the airplane slid to a stop on the runway. Examination of the No. 2 engine revealed that 80 percent of the main fuel pump main drive shaft was worn to the spline root. The examination also revealed that the grease used to lubricate the main drive shaft output splines was not the authorized grease specified per OHM 73-11-1 or MIL-G-81322. Additionally, the magnetic seal compression O-ring that rides on the drive gear journal outer diameter was hardened and exhibited inner diameter axial cracks. The component manufacturer indicated that the failure of the magnetic seal was the first such reported incident in 30 years; however, it agreed to review operational data from airlines to reevaluate the mean time between overhaul intervals for the seal and to recommend an inspection interval, as necessary. Examination of the right MLG revealed a fracture failure of the trunnion bearing support fitting that was caused by fatigue cracking and stress corrosion cracking.

NTSB Probable Cause Narrative

The failure of the right main landing gear caused by fatigue cracking and stress corrosion cracking of the trunnion bearing support fitting.

Event Information

Type of Event Accident
Event Date 8/31/1998
Event Day of the Week Monday
Time of Event 2235
Event Time Zone --
Event City JAMAICA
Event State NEW YORK
Event Country --
Zipcode of the event site --
Event Date Year 1998
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport JOHN F KENNEDY INTL
Event Location Nearest Airport ID JFK
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 --
Weather Briefing Completeness Unknown
Investigator's weather source Unknown
Time of the weather observation
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 Night/Dark
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling Unknown
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 21
Dew Point at event time (in degress fahrenheit) 20
Wind Direction (degrees magnetic) 220
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Unknown
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.94
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 5
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 13734
NTSB Notification Source --
NTSB Notification Date Aug 31 1998 12:00AM
NTSB Notification Time 2345
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jun 6 2003 1:32PM
User who most recently changed record NTSB\MONR
Basic weather conditions --
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N722DH
NTSB Number DCA98MA084
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Boeing
Aircraft Model 727-200
Aircraft Series Identifier 727-200
Aircraft Serial Number 19861
Certified Max Gross Weight 177600
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 5
Number of Engines 3
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Oct 17 1996 12:00AM
Airframe hours since last inspection 2364
Airframe Hours 50861
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name DHL AIRWAYS INC
Aircraft Owner Street Address 333 Twin Dolphin Dr.
Aircraft Owner City Redwood
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 94065
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code DHLA
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) Unknown
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code --
Departure City --
Departure State --
Departure Country --
Departure Time 2200
Departure Time Zone --
Destination Same as Local Flt --
Destination Airport Code CVG
Destination City COVINGTON/CINCI
Destination State KY
Destination Country USA
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred Yes
Date of most recent change to record Mar 29 2002 1:06PM
User who most recently changed record HAUT
Since inspection or accident --
Event Location Runway Number and Location 22R
Runway Length 11351
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --