WX encounter in mia results in diversion.

Attributes
ACN	487500
Time
Date	200010
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mia.airport
State Reference	FL
Altitude	msl single value : 4000
Environment
Flight Conditions	Mixed
Weather Elements	Turbulence Thunderstorm Windshear
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mia.tracon
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 27r other
Flight Phase	descent : approach landing : missed approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	487500
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : excursion from assigned altitude inflight encounter : turbulence inflight encounter : weather inflight encounter other non adherence : clearance other anomaly
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : diverted to another airport flight crew : executed missed approach flight crew : regained aircraft control flight crew : exited adverse environment other
Consequence	other
Supplementary
Problem Areas	Weather
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation

Narrative:

Outside the OM we experienced moderate turbulence with a 30 KT gain in airspeed flying the ILS approach to runway 27R in mia. We immediately performed a missed approach and were given a clearance to 4000 ft with clearance to deviate around WX as necessary. We continued to request a higher altitude, but due to turbulence were able to maintain +/-300 ft. We received a clearance to 10000 ft almost immediately. Diversion to rsw was uneventful with no complaints from ATC or any passenger. No one was injured and no problems were reported to us by anyone.

Original NASA ASRS Text

Title: WX ENCOUNTER IN MIA RESULTS IN DIVERSION.

Narrative: OUTSIDE THE OM WE EXPERIENCED MODERATE TURB WITH A 30 KT GAIN IN AIRSPD FLYING THE ILS APCH TO RWY 27R IN MIA. WE IMMEDIATELY PERFORMED A MISSED APCH AND WERE GIVEN A CLRNC TO 4000 FT WITH CLRNC TO DEVIATE AROUND WX AS NECESSARY. WE CONTINUED TO REQUEST A HIGHER ALT, BUT DUE TO TURB WERE ABLE TO MAINTAIN +/-300 FT. WE RECEIVED A CLRNC TO 10000 FT ALMOST IMMEDIATELY. DIVERSION TO RSW WAS UNEVENTFUL WITH NO COMPLAINTS FROM ATC OR ANY PAX. NO ONE WAS INJURED AND NO PROBS WERE RPTED TO US BY ANYONE.

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.