McDonnell Douglas DC10-10 N1811U
1 May 1995 · Chicago, Illinois, United States · No injuries
Summary
On 1 May 1995 at about 16:20 local time, a McDonnell Douglas DC10-10 registered N1811U was involved in an incident near Chicago, Illinois, United States. 192 people were on board and nobody was injured. The aircraft was slightly damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 16:20
- Classification
- Incident
- Location
- Chicago, Illinois, United States
- Nearest airport
- O'hare International (ORD)
- Coordinates
- Not recorded
- Aircraft
- McDonnell Douglas DC10-10
- Registration
- N1811U
- Category
- Airplane
- Engines
- 3
- Operator
- Not recorded
- Operating rule
- Part 121: Air Carrier
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Route
- Unknown → Washington
- Aircraft damage
- Minor
- Weather
- VMC
- Light
- Day
- NTSB number
- CHI95IA142
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 192 | 0 | 0 | 0 | 192 |
Probable cause
failure of the safety wire and/or safety wire lug arm on one of the stage one to two disk flange bolts due to an inadequate safetying method.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
The flightcrew reported that during the application of takeoff power, when the throttles were in approximately the vertical position, the numbers 1 and 3 engines were indicating approximately 70% N1. The number 2 engine was indicating about 48% N1 and not accelerating. They heard a 'crack' and aborted the takeoff. Examination of the engine revealed that the low pressure turbine (LPT) stage one disk had separated from the LPT rotor at the stage one to two flange joint. Seven intact toroid bolts and sets of associated hardware were recovered. No evidence of fatigue cracking or corrosion (pitting) was noted on any of the bolt pieces recovered from the engine. The shank of one of the toroid bolts exhibited significant damage. The lug arm, used for safetying the bolt, exhibited relatively minor damage. Examination of several of the lug arms revealed 'noticeable wear patterns' and 'crack arrest positions indicative of fatigue cracking.' Statements by UAL maintenance personnel indicate failures of the toroid bolt safeties are occasionally discovered when the engines are disassembled for major overhaul.
Quoted verbatim from the NTSB record.
Other McDonnell Douglas DC10 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 26 Nov 1993 | McDonnell Douglas DC10-30 | Buenos Aires, Argentina | Viasa | Unknown | - |
| 9 Apr 1997 | McDonnell Douglas DC10-30F | Memphis, Tennessee, United States | Federal Express Corporation | No injuries | - |
| 4 Apr 2006 | McDonnell Douglas DC10 | Memphis, Tennessee, United States | Fedex Express | No injuries | - |
| 4 Jun 2006 | McDonnell Douglas DC10-10F | Managua, Nicaragua | Arrow Air Inc | No injuries | - |
| 14 Jan 1983 | McDonnell Douglas DC10-10 | Chicago, Illinois, United States | - | No injuries | - |
| 19 May 2008 | McDonnell Douglas DC10 | Pacific Ocean, United States | Omni Air International | Serious injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 7 Mar 1995 | Cessna T210N | Rockford, Illinois, United States | - | No injuries | - |
| 1 Mar 1995 | Piper PA-32RT | Joliet, Illinois, United States | - | No injuries | - |
| 15 Apr 1995 | Piper J3C | Poplar Grove, Illinois, United States | - | No injuries | - |
| 2 Apr 1995 | Piper PA-22-20-108 | Kankakee, Illinois, United States | - | No injuries | - |
| 20 Apr 1995 | Piper PA-22-160 | Rock Falls, Illinois, United States | - | Minor injuries | - |
| 1 May 1995 | Cessna 152 | West Chicago, Illinois, United States | - | No injuries | - |