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NTSB Report
August 10, 1989 · Boeing 727-224 · N88709
Los Angeles, CA
Overview
Report Status
Probable Cause
Event Type
Incident
Date
August 10, 1989
Injury Outcomes
No injuries (148 uninjured)
Location
Los Angeles, CA
Aircraft
Boeing 727-224
Tail Number
N88709
Operator
Continental Airlines
Injuries
None
Aircraft Damage
Minor
NTSB Number
LAX89IA315
THE CREW OF CONTINENTAL FLIGHT 1223, A BOEING 727, NOTED A SEVERE FLOOR VIBRATION BETWEEN PASSENGER ROWS 21 AND 26 WHILE AT FL310 AT A CRUISE SPEED OF 0.8 MACH. THE CREW SLOWED THE AIRCRAFT TO 280 KTS IAS, DESCENDED TO FL240 AND PROCEEDED TO LOS ANGELES WITHOUT FURTHER DIFFICULTY. A 15 1/2 INCH CONTINUOUS CRACK WAS FOUND ALONG A ROW OF RIVETS AT THE FLOOR LINE IN THE RIGHT WHEEL WELL. THE CRACK WAS IN CLOSE PROXIMITY TO TWO PREVIOUS REPAIRS. THE CRACKS APPREARED TO BE FROM FATIGUE. THE REPAIR OF THE PANEL INVOLOVED INSTALLATION OF A DOUBLE PLATE OVER THE REGION.
NTSB Probable Cause
A FATIGUE CRACK IN THE RIGHT GEAR WHEEL WELL.
Full Narrative
THE CREW OF CONTINENTAL FLIGHT 1223, A BOEING 727, NOTED A SEVERE FLOOR VIBRATION BETWEEN PASSENGER ROWS 21 AND 26 WHILE AT FL310 AT A CRUISE SPEED OF 0.8 MACH. THE CREW SLOWED THE AIRCRAFT TO 280 KTS IAS, DESCENDED TO FL240 AND PROCEEDED TO LOS ANGELES WITHOUT FURTHER DIFFICULTY. A 15 1/2 INCH CONTINUOUS CRACK WAS FOUND ALONG A ROW OF RIVETS AT THE FLOOR LINE IN THE RIGHT WHEEL WELL. THE CRACK WAS IN CLOSE PROXIMITY TO TWO PREVIOUS REPAIRS. THE CRACKS APPREARED TO BE FROM FATIGUE. THE REPAIR OF THE PANEL INVOLOVED INSTALLATION OF A DOUBLE PLATE OVER THE REGION.
Flight
Event TypeIncident
Event Time12:00 PDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBoeing 727-224
Tail NumberN88709
Aircraft CategoryAir
DamageMinor
OperatorContinental Airlines
Operating RulePart 121
Engines3
Engine TypeTurbofan
Engine DetailsP&W · JT8D · Turbofan · 15500
Seats134
People & Injuries
Injury SummaryNo injuries (148 uninjured)
Fatal0
Serious0
Minor0
Uninjured148
Total148
Crew 1Age 51 · First Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourceWIT