# NTSB DCA11WA062: Boeing B737, Dublin, Ireland, May 20, 2011

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Foreign investigation
- Date: May 20, 2011, 21:10 local (21:10 UTC)
- Place: Dublin, Ireland
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Defining event: [Enroute-cruise: Pressure/environ sys malf/fail](https://openairdocs.org/ntsb-events/331)
- Highest injury: No injuries
- Injuries: 66 uninjured
- Status: Led by another country's authority
- NTSB office: Major Investigations Division
- Lead agency: Other
- NTSB case key (mKey): 79214
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DCA11WA062
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/79214/pdf
- Page: https://openairdocs.org/ntsb/DCA11WA062

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Enroute-cruise: Pressure/environ sys malf/fail](https://openairdocs.org/ntsb-events/331) (defining event); cases with it: [All aircraft, 116 cases](https://openairdocs.org/ntsb-events/331/sequence.md)

## Factual narrative

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

## Aircraft

- Registration: EI-DLI (not matched to a registry record)
- Reported make and model: BOEING B737 (800)
- Category: Airplane
- Damage: No damage
- Flight: Non-U.S., commercial
- Operator: Ryanair
- Registered owner: Ryanair
- Airworthiness certificate: Standard, Transport
- Departed: Liverpool
- Destination: Dublin
- Flight plan: IFR
- Airport: Dublin

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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