An A320 encountered severe turbulence at FL280 flying through the midwest and lost 400 ft; however n...

Attributes
ACN	1371387
Time
Date	201607
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Cockpit Window
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 150 Flight Crew Total 9250 Flight Crew Type 7512
Person 2
Function	Dispatcher
Qualification	Dispatch Dispatcher
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Inflight Event / Encounter Loss Of Aircraft Control Inflight Event / Encounter Weather / Turbulence

Narrative:

Severe turbulence encounter approximately 100 nm east at FL280. Encountered a 10-15 second period of severe turbulence. Conditions were IMC with light precipitation and light chop. Pax were seated at the time; fas (flight attendants) were not because we were well west of the convective activity (although aft fas were self seated). There was no indication of convective activity in front of the aircraft on the radar. All convective activity was behind the aircraft by approximately 30 NM. Altitude loss was approximately 400 ft. ATC queried us about our altitude and we responded with a severe turbulence report and that we were returning to FL280. After exiting the turbulence area; we immediately checked with the fas for injuries and cabin condition. There were no reported injuries; and since there were no carts out; the cabin condition was good. [Reports] were recorded for severe turbulence and ACARS inoperative via [commercial radio] voice with maintenance control.

Original NASA ASRS Text

Title: An A320 encountered severe turbulence at FL280 flying through the Midwest and lost 400 ft; however no one suffered injuries. As a result of the turbulence the right front windshield outer pane cracked. The flight continued to its destination.

Narrative: Severe turbulence encounter approximately 100 nm east at FL280. Encountered a 10-15 second period of severe turbulence. Conditions were IMC with light precipitation and light chop. Pax were seated at the time; FAs (Flight Attendants) were not because we were well west of the convective activity (Although aft FAs were self seated). There was no indication of convective activity in front of the aircraft on the radar. All convective activity was behind the aircraft by approximately 30 NM. Altitude loss was approximately 400 ft. ATC queried us about our altitude and we responded with a severe turbulence report and that we were returning to FL280. After exiting the turbulence area; we immediately checked with the FAs for injuries and cabin condition. There were no reported injuries; and since there were no carts out; the cabin condition was good. [Reports] were recorded for severe turbulence and ACARS inoperative via [Commercial Radio] voice with Maintenance Control.

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.

An A320 encountered severe turbulence at FL280 flying through the midwest and lost 400 ft; however no one suffered injuries. As a result of the turbulence the right front windshield outer pane cracked. The flight continued to its destination.