<< >> NASA ASRS Report 589476, August 2003

E135 crew experienced violent aircraft vibration and loud bangs at FL270. The crew declared an emergency and diverted to the nearest suitable airport.

Attributes
ACN	589476
Time
Date	200308
Day	Sun
Place
Locale Reference	atc facility : zzz.artcc
State Reference	US
Altitude	msl single value : 27000
Environment
Flight Conditions	VMC
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 135 ER&LR
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : holding cruise : level
Route In Use	arrival : holding pattern
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	589476
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
ASRS Report	589471
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other flight crewb other other : 3
Resolutory Action	controller : issued new clearance flight crew : landed in emergency condition flight crew : declared emergency flight crew : diverted to another airport
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

En route holding. We encountered loud bangs and violent shakes that seemed to originate from nose gear area. We declared an emergency and decided to land at ZZZ. The vibrations and noise occurred for 6-8 seconds every 3-4 mins. They occurred in all configns, gear up or down, and at all flap settings. Thrust setting was between flight idle and 75% N1. We landed without incident and found no visible aircraft damage. Supplemental information from acn 589471: experienced severe vibrations and noises from the aircraft at FL270. The aircraft speed was approximately 310 KTS. The vibrations seemed to be coming from the right side of the aircraft possibly the floor. There were 4 occurrences that lasted approximately 6-8 seconds. Later a passenger that had been seated in the last row told me that he had believed the noises were coming from under his feet. We declared an emergency. There were no EICAS messages and a postflt inspection did not reveal any clues.

Related reports:

• A B737-300 on landing the aircraft experienced severe vibrat...
• Small aircraft pilot obtains flight assist from approach con...
• A B727-200 on takeoff had aircraft veer to right and experie...
• A B727-200 in descent at FL200 experienced aircraft vibratio...
• A CL65 flight crew experienced a vibration, then later had t...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: E135 CREW EXPERIENCED VIOLENT ACFT VIBRATION AND LOUD BANGS AT FL270. THE CREW DECLARED AN EMER AND DIVERTED TO THE NEAREST SUITABLE ARPT.

Narrative: ENRTE HOLDING. WE ENCOUNTERED LOUD BANGS AND VIOLENT SHAKES THAT SEEMED TO ORIGINATE FROM NOSE GEAR AREA. WE DECLARED AN EMER AND DECIDED TO LAND AT ZZZ. THE VIBRATIONS AND NOISE OCCURRED FOR 6-8 SECONDS EVERY 3-4 MINS. THEY OCCURRED IN ALL CONFIGNS, GEAR UP OR DOWN, AND AT ALL FLAP SETTINGS. THRUST SETTING WAS BTWN FLT IDLE AND 75% N1. WE LANDED WITHOUT INCIDENT AND FOUND NO VISIBLE ACFT DAMAGE. SUPPLEMENTAL INFO FROM ACN 589471: EXPERIENCED SEVERE VIBRATIONS AND NOISES FROM THE ACFT AT FL270. THE ACFT SPD WAS APPROX 310 KTS. THE VIBRATIONS SEEMED TO BE COMING FROM THE R SIDE OF THE ACFT POSSIBLY THE FLOOR. THERE WERE 4 OCCURRENCES THAT LASTED APPROX 6-8 SECONDS. LATER A PAX THAT HAD BEEN SEATED IN THE LAST ROW TOLD ME THAT HE HAD BELIEVED THE NOISES WERE COMING FROM UNDER HIS FEET. WE DECLARED AN EMER. THERE WERE NO EICAS MESSAGES AND A POSTFLT INSPECTION DID NOT REVEAL ANY CLUES.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.