- Date
- September 12, 1988, 13:50 local (19:50 UTC)
- Place
- Denver, CO
- Injuries
- 1 minor, 206 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N1830UMcdonnell Douglas DC-10-10
- Weather
- Visual (VMC) · Day
- Status
- Completed · report July 12, 1991
- Report
- Approved by Office Director
- FAA report
- 19880912041389A
- Case key
- 17547
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
As the capt was deploying reversers drg lndg, #2 & #3 reversers unlocked & deployed (green lgt cond), but #1 reverser was binding & only moved to the unlocked psn (amber lgt cond). Capt was not warned of this cond, though 2nd officer should have monitored lgts. Capt said he rchd to check #1 lever. At abt that time, acft yawed rgt. Despite imt action bythe capt, drctnl ctl of acft was lost due to yawing caused by inop thrust reverser. Acft contd off rwy, crossed 2 twys &nose gear collapsed. After stopping, evacuation was ordered. Evacuation slides deployed nmly, but with the acft on its nose, use of slides at doors 4L & 4R was discontinued due to excessive vertical angle of slides. Inv revealed that aftertchdwn, #1 eng accelerated with fwd thrust as #2 & #3 engs provided reverse thrust. At abt the same time, the acft's nose lifted off the rwy to a 4 deg attitude & the acft went off the rwy. An exam of the throttle quadrant revealed the S1-847 sw was curled/twisted & 2 support shafts (holding the sws) were bent causing intmt opn of the #1 reverser.
Aircraft
- Registration
- N1830U
- Reported as
- Mcdonnell Douglas DC-10-10
- Category
- Airplane
- Serial number
- 46629
- Airframe hours
- 37,265
- Engine
- GE CF6-6D, 39,300 lbs thrust, turbo fan
- Damage
- Substantial damage
- Flight
- Part 121
- Registered owner
- United Airlines
- Airworthiness certificate
- Standard, Transport
- Last inspection
- Continuous airworthiness · June 19, 1988 · 1,130 hours before
- Departed
- ORD · Chicago, IL
- Destination
- DEN
- Flight plan
- IFR
- Airport
- DEN · Stapleton Intl, runway 26L, 10,004 × 150 ft, concrete
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 56
- Certificates
- Commercial, Airline transport
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--w/ waivers/lim
- Seat
- Left
- Flight hours
- 22,500 total · 233 in the last 90 days · 79 in the last 30 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 360° at 7 knots
- Visibility
- 5 statute miles
- Lowest ceiling
- 1,400 ft overcast
- Temperature
- 45 °F, dew point 43 °F
- Altimeter
- 30.00 inHg
- Observed at
- DEN
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.