<< >> NASA ASRS Report 1752076, July 2020

B737 flight crew reported descending to a lower altitude after experiencing a power loss at FL410 while penetrating weather.

Attributes
ACN	1752076
Time
Date	202007
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Turbine Engine
Person 1
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument
Experience	Flight Crew Last 90 Days 136 Flight Crew Type 15000
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 75 Flight Crew Type 75
Events
Anomaly	Aircraft Equipment Problem Critical Inflight Event / Encounter Weather / Turbulence

Narrative:

Our flight was being vectored to go around convective activity. We were at FL410 going around weather and trying to avoid all thunderstorms. We experienced #1 engine was not producing full power and had to descend to FL380. The static noise was so loud we could not hear ATC. We needed to descend to a lower altitude and went down to FL380. I instructed my first officer to call ATC on #2 comm; at that time I took control of the aircraft. We descended to FL380 and were able to talk to ATC. We came out of the weather and the #1 engine was operating normally. We continued with no problems.

Related reports:

• A BE9L pilot reported penetrating a line of severe thunderst...
• Falcon 900 captain reported experiencing extreme up and down...

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

Original NASA ASRS Text

Title: B737 flight crew reported descending to a lower altitude after experiencing a power loss at FL410 while penetrating weather.

Narrative: Our flight was being vectored to go around convective activity. We were at FL410 going around weather and trying to avoid all thunderstorms. We experienced #1 engine was not producing full power and had to descend to FL380. The static noise was so loud we could not hear ATC. We needed to descend to a lower altitude and went down to FL380. I instructed my First Officer to call ATC on #2 COMM; at that time I took control of the aircraft. We descended to FL380 and were able to talk to ATC. We came out of the weather and the #1 engine was operating normally. We continued with no problems.

Data retrieved from NASA's ASRS site 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.