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NTSB Report
June 6, 1987 · Nihon YS-11 · N187P
Hyannis, MA
Overview
Report Status
Preliminary report
Event Type
Incident
Date
June 6, 1987
Injury Outcomes
No injuries (23 uninjured)
Location
Hyannis, MA
Aircraft
Nihon YS-11
Tail Number
N187P
Injuries
None
Aircraft Damage
Minor
NTSB Number
NYC87IA167
THE YS-11 WAS LANDING WITH A RIGHT CROSSWIND. THE PILOT SAID HE TOUCHED DOWN ON THE RIGHT MAIN LANDING GEAR FIRST AND UPON TOUCHDOWN, THE RIGHT MAIN LANDING GEAR COLLAPSED. THE AIRCRAFT STAYED ON THE RUNWAY AND RECEIVED MINOR DAMAGE. THE COCKPIT CREW OF 2, 2 FLIGHT ATTENDANTS, 7 REVENUE PASSENGERS AND 12 NON-REVENUE PASSENGERS (A GRADUATING GLASS OF FLIGHT ATTENDANTS) WERE NOT INJURED DURING THE SUBSEQUENT EVACUATION OF THE AIRCRAFT. EXAMINATION OF THE LANDING GEAR TRUNION DISCLOSED A STRESS FRACTURE AND HEAVY CORROSION. THE CORROSION PRODUCED PITTING WHICH CAN BE A SOURCE OF STRESS. THE LANDING GEAR HAD BEEN OVERHAULED IN ACCORDANCE WITH RECOMMENDED PROCEDURES WHICH INCLUDE CORROSION PREVENTATIVE MEASURES. THE CORROSION WAS NOT DETECTED DURING NORMAL INSPECTIONS.
Full Narrative
THE YS-11 WAS LANDING WITH A RIGHT CROSSWIND. THE PILOT SAID HE TOUCHED DOWN ON THE RIGHT MAIN LANDING GEAR FIRST AND UPON TOUCHDOWN, THE RIGHT MAIN LANDING GEAR COLLAPSED. THE AIRCRAFT STAYED ON THE RUNWAY AND RECEIVED MINOR DAMAGE. THE COCKPIT CREW OF 2, 2 FLIGHT ATTENDANTS, 7 REVENUE PASSENGERS AND 12 NON-REVENUE PASSENGERS (A GRADUATING GLASS OF FLIGHT ATTENDANTS) WERE NOT INJURED DURING THE SUBSEQUENT EVACUATION OF THE AIRCRAFT. EXAMINATION OF THE LANDING GEAR TRUNION DISCLOSED A STRESS FRACTURE AND HEAVY CORROSION. THE CORROSION PRODUCED PITTING WHICH CAN BE A SOURCE OF STRESS. THE LANDING GEAR HAD BEEN OVERHAULED IN ACCORDANCE WITH RECOMMENDED PROCEDURES WHICH INCLUDE CORROSION PREVENTATIVE MEASURES. THE CORROSION WAS NOT DETECTED DURING NORMAL INSPECTIONS.
Flight
Event TypeIncident
Event Time14:15 EDT
Nearest AirportHYANNIS (0nm N)
Runway33
Runway Length3999 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftNihon YS-11
Tail NumberN187P
Aircraft CategoryAir
DamageMinor
Operating RulePart 121
Engines2
Engine TypeTurboprop
Engine DetailsRolls-Royce · MK-532-7 · Turboprop · 2050
Seats66
People & Injuries
Injury SummaryNo injuries (23 uninjured)
Fatal0
Serious0
Minor0
Uninjured23
Total23
Crew 1Age 41 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind350° @ 10 kt, gusting 15 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter30.00 inHg