Aircraft Accident/Incident Report

Las Vegas, Nevada 89119
Wednesday, October 17, 1984 6:54 PDT

NTSB Narrative Summary Released at Completion of Accident

AN UNCOMMANDED DEPLOYMENT OF THE #8 LEADING EDGE SLAT OCCURRED DURING A CLIMB. CONTROL OF THE ACFT WAS NOT AFFECTED & THE FLT CONTINUED TO THE DESTINATION. THE CREW ATTEMPT TO RECYCLE THE SLATS, BUT TO NO AVAIL. AN EXAM OF THE #8 SLAT ACTUATOR DID NOT DISCLOSE A MALFUNCTION OR FAILURE. HOWEVER, BOEING DID REPORT THE ACTUATOR RETRACT LOCK SWITCH DISPLAYED EVIDENCE OF AN INTERMITTENT MALFUNCTION THAT COULD HAVE FALSELY INDICATED THAT THE ACTUATOR WAS RETRACTED, WHEN IN REALITY IT HAD NOT.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Incident
Event Date 10/17/1984
Event Day of the Week Wednesday
Time of Event 654
Event Time Zone Pacific Daylight Time
Event City LAS VEGAS
Event State NEVADA
Event Country --
Zipcode of the event site 89119
Event Date Year 1984
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
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 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 648 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 10
Weather Observation Facility ID LAS
Elevation of weather observation facility 2174
Distance of event from weather observation facility (units?) 10
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 9000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 50
Air Temperature at event time (in degrees celsius) 15
Dew Point at event time (in degress fahrenheit) 1
Wind Direction (degrees magnetic) 230
Variable Wind Indicator Unknown
Wind Speed (knots) 22
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 30
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 1100
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 30
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 5094
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 27042
Date of most recent change to record Jan 2 2001 9:15AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N722AA
NTSB Number LAX85IA023
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage None
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BOEING
Aircraft Model 727-227
Aircraft Series Identifier 727-227
Aircraft Serial Number 20730
Certified Max Gross Weight 135400
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 134
Number of Engines 3
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection May 9 1983 12:00AM
Airframe hours since last inspection 4241
Airframe Hours 32671
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name AMERICAN AIRLINES, INC.
Aircraft Owner Street Address P.O. BOX 616
Aircraft Owner City DALLAS
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 75261
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code TSFA
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 No
Departure Airport Code LAS
Departure City LAS VEGAS
Departure State NV
Departure Country
Departure Time 644
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code LAX
Destination City LOS ANGELES
Destination State CA
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 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --