Ryanair B738 at Shannon on Feb 4th 2013, unreliable airspeed and altitude

Last Update: February 5, 2013 / 14:39:15 GMT/Zulu time

Bookmark this article
Incident Facts

Date of incident
Feb 4, 2013

Classification
Incident

Airline
Ryanair

Flight number
FR-1173

Departure
Wroclaw, Poland

Destination
Shannon, Ireland

Aircraft Registration
EI-DCW

Aircraft Type
Boeing 737-800

ICAO Type Designator
B738

A Ryanair Boeing 737-800, registration EI-DCW performing flight FR-1173 from Wroclaw (Poland) to Shannon (Ireland), was maintaining FL080 on approach to Shannon's runway 24 and had just been cleared to 3000 feet and the ILS approach to runway 24 together with information about up to moderate turbulence with windshear of +/- 20 knots, when the crew advised they had an altitude disagree indication and requested to maintain FL080 to work the checklists. The crew subsequently reported that one of their altitude indicators showed FL080, the other FL085, one of their airspeed indicators read 150 knots which was definitely too slow, approach control reported the aircraft was showing FL085 on their radar, after completing the checklists the crew concluded they had unreliable altitude and airspeed indications and decided to divert to Dublin. The aircraft maintained FL080 on the way to Dublin, the crew advised they would be able to taxi normally after landing. The aircraft landed safely on Dublin's runway 28 about 30 minutes after aborting the approach to Shannon and taxied to the gate now indicating normal operation.

The airline reported a cockpit warning indication of a possible technical problem prompted the crew to divert to Dublin. A replacement aircraft took the passengers to Shannon.

A replacement Boeing 737-800 registration EI-EFB reached Shannon with a delay of 2.5 hours.

Metars Shannon:
EINN 042200Z 27028G44KT 9999 FEW010 BKN018CB BKN040 03/00 Q1010 NOSIG
EINN 042130Z 28024G37KT 9999 FEW012 FEW018CB SCT050 03/01 Q1010 NOSIG
EINN 042100Z 28029G40KT 9999 -SHRA FEW012 SCT018CB BKN028 04/01 Q1011 WS RWY24 NOSIG
EINN 042030Z 27026G36KT 9999 FEW012 SCT018CB BKN100 04/01 Q1011 WS RWY24 NOSIG
EINN 042000Z 26022KT 9999 -SHRA FEW014 BKN020CB BKN060 05/03 Q1011 WS RWY24 NOSIG
EINN 041930Z 28025KT 9000 -SHRA FEW014 BKN020CB BKN045 04/02 Q1012 WS RWY24 NOSIG
EINN 041900Z 26021KT 9999 FEW018CB BKN042 BKN080 06/03 Q1011 NOSIG
EINN 041830Z 26019KT 9999 FEW018CB BKN032 BKN060 07/04 Q1012 NOSIG
EINN 041800Z 26024KT 9999 -SHRA FEW018CB BKN032 BKN050 06/04 Q1012 NOSIG

Metars Dublin:
EIDW 042200Z 25019KT 9999 -SHRA FEW016 FEW018CB SCT035 BKN100 02/00 Q1005 NOSIG
EIDW 042130Z 25023KT 9999 -SHRA FEW009 SCT017CB BKN035 02/00 Q1005 NOSIG
EIDW 042100Z 26017KT 9999 -SHRA FEW009 SCT017CB BKN023 02/01 Q1006 NOSIG
EIDW 042030Z 26021KT 9999 -SHRA FEW015 FEW018CB BKN026 03/01 Q1006 NOSIG
EIDW 042000Z 26024KT 9999 -SHRA FEW005 FEW018CB SCT020 02/01 Q1006 NOSIG
EIDW 041930Z 26028G38KT 9999 -SHRA FEW010 FEW018CB BKN026 03/02 Q1006 NOSIG
EIDW 041900Z 24019G33KT 9999 -SHRA FEW015 BKN018CB 04/02 Q1006 NOSIG
Aircraft Registration Data
Registration mark
EI-DCW
Country of Registration
Ireland
Date of Registration
LhjqbkmfAfiApf Subscribe to unlock
Manufacturer
THE BOEING COMPANY
Aircraft Model / Type
BOEING 737-8AS
ICAO Aircraft Type
B738
Year of Manufacture
Jnnp Subscribe to unlock
Serial Number
Amjp Subscribe to unlock
Maximum Take off Mass (MTOM) [kg]
Fdccj Subscribe to unlock
Engine Count
Q Subscribe to unlock
Engine
Fqhihpmhhbjgnk ipeeAnnjAil Subscribe to unlock
Main Owner
Bqlhigekljfemfgppk ghmmjljegdglcpgnAiqekgjcpmqhjmqc llbhfgikdifd Subscribe to unlock
Incident Facts

Date of incident
Feb 4, 2013

Classification
Incident

Airline
Ryanair

Flight number
FR-1173

Departure
Wroclaw, Poland

Destination
Shannon, Ireland

Aircraft Registration
EI-DCW

Aircraft Type
Boeing 737-800

ICAO Type Designator
B738

This article is published under license from Avherald.com. © of text by Avherald.com.
Article source

You can read 2 more free articles without a subscription.

Subscribe now and continue reading without any limits!

Subscribe now
Are you a subscriber? Login
Subscribe

Read unlimited articles and receive our daily update briefing. Gain better insights into what is happening in commercial aviation safety.

Compare our plans

Send tip

Support AeroInside by sending a small tip amount.

Send tip

Related articles

Newest articles

Subscribe today

Are you researching aviation incidents? Get access to AeroInside Insights, unlimited read access and receive the daily newsletter.

Pick your plan and subscribe

Partner

Blockaviation logo

A new way to document and demonstrate airworthiness compliance and aircraft value. Find out more.

Virtual Speech logo

ELITE Simulation Solutions is a leading global provider of Flight Simulation Training Devices, IFR training software as well as flight controls and related services. Find out more.

AeroInside Blog
Popular aircraft
Airbus A320
Boeing 737-800
Boeing 737-800 MAX
Popular airlines
American Airlines
United
Delta
Air Canada
Lufthansa
British Airways