China Eastern E145 at Shanghai on Jun 7th 2013, runway excursion, nose gear collapse
Last Update: February 3, 2017 / 15:35:16 GMT/Zulu time
Incident Facts
Date of incident
Jun 7, 2013
Classification
Accident
Cause
Runway excursion
Airline
China Eastern Airlines
Flight number
MU-2947
Departure
Huaian, China
Destination
Shanghai Hongqiao, China
Aircraft Registration
B-3052
Aircraft Type
Embraer ERJ-145
ICAO Type Designator
E145
Airport ICAO Code
ZSSS
A NTSB safety recommentadion released on Feb 2nd 2017 reports, that the cause of the runway excursion was foreign object debris inside the electrohydraulic servo valve (EHSV) that blocked a hydraulic port and caused an uncommanded nose wheel deflection to the left. Prior to the disassembly of the EHSV and discovery of the debris the unit had passed an acceptance test as performed on any newly manufactured unit.
The NTSB reported that a number of pilots use binder brackets instead of the chart holders installed by Embraer to hold their binders (containing charts) etc., these binder brackets not having been approved by Embraer. The binder is directly above the nosewheel steering tiller, the NTSB wrote: "The NTSB is concerned that a binder being held by an unapproved bracket may become dislodged, fall, and strike the tiller, engaging the nosewheel steering system and possibly providing a nosewheel steering input. If this happens during the landing roll, the nosewheel steering input could cause a runway excursion."
The NTSB therefore recommended to study and revise the acceptance tests and to issue an operational bulletin to inform flight crew that the use of binder brackets is not approved and could create a hazardeous situation if the binder becomes dislodged.
Metars:
ZSSS 071100Z 11010G15MPS 4000 SHRA BR BKN009 OVC040 21/19 Q1000 BECMG TL1230 -SHRA
ZSSS 071030Z 11010G15MPS 4000 SHRA BR BKN009 OVC040 21/19 Q1000 NOSIG
ZSSS 071000Z 11008G15MPS 080V140 7000 -SHRA BKN009 OVC040 22/20 Q1000 NOSIG
ZSSS 070930Z 11008G13MPS 070V140 7000 -SHRA BKN009 OVC040 21/19 Q1000 RESHRA NOSIG
ZSSS 070900Z 11009G15MPS 2500 SHRA BR BKN009 OVC040 21/20 Q1000 BECMG TL1030 3000 -SHRA
ZSSS 070830Z 11009MPS 4000 SHRA BR BKN009 OVC040 21/20 Q1000 NOSIG
ZSSS 070800Z 10009MPS 6000 -SHRA BKN009 OVC040 22/20 Q1001 NOSIG
ZSSS 070730Z 10009MPS 7000 -SHRA BKN009 OVC040 22/20 Q1001 RESHRA NOSIG
ZSSS 070700Z 10008G13MPS 2500 SHRA BR BKN009 OVC040 22/21 Q1001 BECMG TL0800 3000 -RA
ZSSS 070630Z 09007MPS 4000 SHRA BR BKN009 OVC040 22/20 Q1001 NOSIG
ZSSS 070600Z 10008MPS 2500 SHRA BR BKN009 OVC040 21/20 Q1002 BECMG TL0730 -RA
ZSSS 070530Z 11008G13MPS 070V140 6000 SHRA BKN011 OVC040 23/21 Q1002 NOSIG
Incident Facts
Date of incident
Jun 7, 2013
Classification
Accident
Cause
Runway excursion
Airline
China Eastern Airlines
Flight number
MU-2947
Departure
Huaian, China
Destination
Shanghai Hongqiao, China
Aircraft Registration
B-3052
Aircraft Type
Embraer ERJ-145
ICAO Type Designator
E145
Airport ICAO Code
ZSSS
This article is published under license from Avherald.com. © of text by Avherald.com.
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