Boeing B737 incident near Dublin, Ie, May 20, 2011
On May 20, 2011 at about 9:10 pm local time, a Boeing B737, registered EIDLI, was involved in an incident during enroute (cruise) near Dublin (Dublin airport). It was flown under non-U.S. commercial rules. No one was hurt; 66 people were on board or involved.
The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this incident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- May 20, 2011 · about 9:10 pm local time
- Place
- Dublin, Ireland · Dublin
- Type
- Incident
- Injuries
- No one was hurt; 66 people were on board or involved.
- Weather
- not recorded
- Aircraft
- Boeing B737 800
- Registration
- EIDLI · no longer on the register
- Damage
- Not recorded
- Flight
- Flight · non-U.S. commercial rules
The NTSB's narrative preliminary · quoted from the NTSB record
On May 20, 2011 at 2110 UTC, a Boeing 737-800, Irish registration EI-DLI, operated by Ryanair, experienced a depressurization when enroute from Liverpool England, to Dublin Ireland. There were no injuries to the 6 crew and 60 passengers, and the airplane was not damaged. The event is being investigated by the Air Accidents Investigation Unit of Ireleand. www.aaiu.gov.ie
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Pressure/environ sys malf/fail during enroute (cruise) defining event
The aircraft
- Landing gear: fixed
The flight
- Departed from: Liverpool
- Destination: Dublin
- Flight plan: IFR
- A second pilot was aboard
Weather at the time
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Cabi | 4 | |||
| Flight crew | 2 | |||
| Passengers | 60 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.