<< >> NASA ASRS Report 1331346, February 2015

Flight crew reported an altitude excursion on arrival into iwa when they encountered turbulence and windshear.

Attributes
ACN	1331346
Time
Date	201502
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Altitude Excursion From Assigned Altitude Inflight Event / Encounter Weather / Turbulence

Narrative:

I received an altitude deviation inquiry on the arrival of [our] flight to iwa and subsequently was asked to call phx tracon after landing. While on an assigned heading near the northwest valley of the superstition mountains; we experienced turbulence and windshear (with a subsequent loss of airspeed and altitude). Recovery procedures were applied; and altitude and airspeed were regained. Upon recovery of our assigned altitude of 6;000 ft; ATC did query us on our assigned altitude. We lost approximately 20 knots and approximately 200 feet of altitude. We became quite busy at this point and did not make a PIREP on the windshear.

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Original NASA ASRS Text

Title: Flight crew reported an altitude excursion on arrival into IWA when they encountered turbulence and windshear.

Narrative: I received an altitude deviation inquiry on the arrival of [our] flight to IWA and subsequently was asked to call PHX Tracon after landing. While on an assigned heading near the northwest valley of the Superstition Mountains; we experienced turbulence and windshear (with a subsequent loss of airspeed and altitude). Recovery procedures were applied; and altitude and airspeed were regained. Upon recovery of our assigned altitude of 6;000 ft; ATC did query us on our assigned altitude. We lost approximately 20 knots and approximately 200 feet of altitude. We became quite busy at this point and did not make a PIREP on the windshear.

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.