A BA31 in climb at 14500 ft declared an emergency and diverted due to sudden failure of the propeller reduction gear box. A loss of separation was reported by ATC during diversion. Also received a TA.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	420185
Time
Date	199811
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : clt
State Reference	NC
Altitude	msl bound lower : 14500 msl bound upper : 14500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : ztl
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : intermediate altitude other other
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : cfi pilot : instrument pilot : flight engineer
Experience	flight time last 90 days : 320 flight time total : 3000 flight time type : 700
ASRS Report	420185
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	other Other
Miss Distance	horizontal : 27600 vertical : 600
Supplementary
Primary Problem	Aircraft

Narrative:

Flight xyz nov/xa/98 clt to lwb. Climbing through 14500 ft, lost left engine. Was unable to maintain altitude. Declared emergency. Squawked 7700 and returned to clt. Due to loss of engine and unable to maintain altitude, received 1 TA and later found out there was loss of separation. Callback conversation with reporter revealed the following information: the reporter stated the engine gave no prior indication or warning of failure. The reporter said the propeller reduction gear box was damaged extensively and was the cause of the failure. The reporter said the entire engine was replaced.

Original NASA ASRS Text

Title: A BA31 IN CLB AT 14500 FT DECLARED AN EMER AND DIVERTED DUE TO SUDDEN FAILURE OF THE PROP REDUCTION GEAR BOX. A LOSS OF SEPARATION WAS RPTED BY ATC DURING DIVERSION. ALSO RECEIVED A TA.

Narrative: FLT XYZ NOV/XA/98 CLT TO LWB. CLBING THROUGH 14500 FT, LOST L ENG. WAS UNABLE TO MAINTAIN ALT. DECLARED EMER. SQUAWKED 7700 AND RETURNED TO CLT. DUE TO LOSS OF ENG AND UNABLE TO MAINTAIN ALT, RECEIVED 1 TA AND LATER FOUND OUT THERE WAS LOSS OF SEPARATION. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ENG GAVE NO PRIOR INDICATION OR WARNING OF FAILURE. THE RPTR SAID THE PROP REDUCTION GEAR BOX WAS DAMAGED EXTENSIVELY AND WAS THE CAUSE OF THE FAILURE. THE RPTR SAID THE ENTIRE ENG WAS REPLACED.

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.