Logan International Airport
Aircraft Accident/Incident Report

Boston, Massachusetts 02128
Thursday, June 6, 1991 16:39 EDT

NTSB Narrative Summary Released at Completion of Accident

JUST AFTER TAKEOFF, THE PILOT SAID, 'A LOUD NOISE WAS HEARD ACCOMPANIED BY HIGH EGT ON THE NUMBER 2 ENGINE.' THE CREW SHUT DOWN THE ENGINE AND LANDED WITHOUT INCIDENT. AN EXAMINATION OF THE ENGINE REVEALED AN UNCONTAINED ENGINE FAILURE. DAMAGE TO THE AIRPLANE WAS MINOR. A THIRD STAGE TURBINE BLADE FAILED DUE TO HIGH CYCLE FATIGUE ON THE LEADING EDGE OF THE BLADE.

NTSB Probable Cause Narrative

THE FAILURE OF THE THIRD STAGE TURBINE BLADE ON THE NUMBER TWO ENGINE, DUE TO HIGH CYCLE FATIGUE.

Event Information

Type of Event Incident
Event Date 6/6/1991
Event Day of the Week Thursday
Time of Event 1639
Event Time Zone Eastern Daylight Time
Event City BOSTON
Event State MASSACHUSETTS
Event Country --
Zipcode of the event site 02128
Event Date Year 1991
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport LOGAN INTERNATIONAL
Event Location Nearest Airport ID BOS
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 10
Weather Briefing Completeness Not pertinent
Investigator's weather source Pilot
Time of the weather observation 0
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 Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
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) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
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 156
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 5011
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 44858
Date of most recent change to record Dec 12 2000 10:23AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N750
NTSB Number NYC91IA137
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Minor
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BOEING
Aircraft Model 727-214
Aircraft Series Identifier 727-214
Aircraft Serial Number 709108
Certified Max Gross Weight 175000
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 159
Number of Engines 3
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection Jan 2 2000 12:00AM
Airframe hours since last inspection --
Airframe Hours --
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name USAIR
Aircraft Owner Street Address 2345 CHRYSTAL DR.
Aircraft Owner City ARLINGTON
Aircraft Owner State VA
Aircraft Owner Country
Aircraft Owner Zipcode 22227
Operator is an individual? --
Operator Name USAIR
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 2345 CHRYSTAL DR.
Operator City ARLINGTON
Operator State VA
Operator Country
Operator Zip code 22227
Operator Code USAA
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
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) Unknown
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 1639
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code CLT
Destination City CHARLOTTE
Destination State NC
Destination Country
Specific Phase of Flight Climb
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 9
Runway Length 9000
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --