Boeing 757-251 N516US
6 November 1986 · Washington, District of Columbia, United States · No injuries
Summary
On 6 November 1986 at about 03:00 local time, a Boeing 757-251 registered N516US was involved in an incident near Washington, District of Columbia, United States. 188 people were on board and nobody was injured. No probable cause statement is available for this record.
The record
- Date
- at 03:00
- Classification
- Incident
- Location
- Washington, District of Columbia, United States
- Coordinates
- Not recorded
- Aircraft
- Boeing 757-251
- Registration
- N516US
- Category
- Airplane
- Engines
- 2
- Operator
- Not recorded
- Operating rule
- Part 121: Air Carrier
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Route
- Washington → Minneapolis
- Aircraft damage
- Not recorded
- Weather
- VMC
- Light
- Night/Dark
- NTSB number
- CHI87IA026
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 188 | 0 | 0 | 0 | 188 |
Probable cause
The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.
Nothing about the cause is stated here that is not in the source record.
Read the full NTSB narrative
DRG AN EN ROUTE CLIMB, AILERON CONTROL (CTL) BCM PROGRESSIVELY MORE STIFF. AT CRUISE ALT, THE AUTOPLT DISENGAGED & THE AILERONS WOULD NOT MOVE. AILERON CTL WAS RESTORED AFTER A DSCNT BELOW THE FREEZING LEVEL. THE ACFT WAS FLOWN BELOW THE FREEZING LVL FOR THE REMAINDER OF THE FLT. A POST-FLT MAINT INSPN REVEALED NO PHYSICAL EVIDENCE FOR THE TEMPORARY LOSS OF AILERON CTL. AN INVESTIGATION REVEALED THAT BEFORE TAKEOFF, THE ACFT WAS EXPOSED TO RAIN FOR ABOUT 50 MIN WHILE PARKED AT A GATE. THE TEMPERATURE IN WASHINGTON WAS IN THE MID 40'S. THE OPERATOR SUSPECTED ICE BUILD-UP ON THE AILERON CABLES. THE MANUFACTURER HAD ISSUED A SERVICE BULLETIN (SB) (SB B-757-0079) TO REMOVE THE AILERON CABLE GROMMETS & APPLYA SEALANT TO ELIMINATE THE PROBLEM. THE SB HAD BEEN COMPLIED WITH. AFTER THE INCIDENT, A REVISED SB, DATED 11/6/86, WAS ISSUED TO REPLACE THE AILERON CABLE GROMMETS WITH NEW GROMMETS WITH INCREASED INTERNAL DIAMETER. ALSO, AN OPNS MANUAL BULLETIN (NUMBER 87-1) WAS ISSUED ON 1/22/87 TO ADVISE FLT CREWS.
Quoted verbatim from the NTSB record.
Other Boeing 757 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 3 Apr 1986 | Boeing 757-251 | Minneapolis, Minnesota, United States | Northwest Airline | No injuries | - |
| 18 Jun 1987 | Boeing 757-251 | Detroit, Michigan, United States | - | No injuries | - |
| 29 Sep 1988 | Boeing 757 | Alajuela, Costa Rica | Eastern Airlines | No injuries | - |
| 22 Mar 1988 | Boeing 757 | Providence, Rhode Island, United States | - | No injuries | - |
| 16 Apr 1988 | Boeing 757-225 | San Jose, Costa Rica | - | Serious injuries | - |
| 9 Oct 1989 | Boeing 757-251 | San Francisco, California, United States | Northwest Airlines | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 17 May 1986 | Cessna 340A | Washington, District of Columbia, United States | - | Minor injuries | - |
| 16 Apr 1985 | Boeing 727-200 | Washington, District of Columbia, United States | - | No injuries | - |
| 8 Sep 1985 | McDonnell Douglas DC-10-10 | Washington, District of Columbia, United States | United Airlines | Minor injuries | - |
| 11 Jul 1987 | Boeing 727-225 | Washington, District of Columbia, United States | Eastern Air Lines | No injuries | - |
| 11 Aug 1987 | Boeing 747-200B | Washington, District of Columbia, United States | All Nippon Airways | Fatal | 1 |
| 21 Aug 1987 | Bell 206B | Washington, District of Columbia, United States | Stuart Aviation | Fatal | 3 |