AT72 crew had altitude overshoot in myna class east airspace.

Attributes
ACN	497439
Time
Date	200101
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mynn.airport
State Reference	FO
Altitude	msl bound lower : 12000 msl bound upper : 14000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mynn.tracon
Operator	common carrier : air carrier
Make Model Name	ATR 72
Operating Under FAR Part	Part 121
Flight Phase	climbout : vacating altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
ASRS Report	497439
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 10000 flight time type : 3000
ASRS Report	497440
Events
Anomaly	altitude deviation : overshoot other anomaly other
Independent Detector	atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : issued alert flight crew : returned to assigned altitude
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance

Narrative:

Initial climb clearance to 14000 ft MSL was given by first departure controller while climbing through 12500 ft to 14000 ft. The second departure controller told us that we were given 12000 ft as an initial altitude. We descended to 12000 ft and stayed there until leaving NAS airspace. Many times at nassau local controller pronunciations are difficult to understand at best, and mistakes often occur due to this. My crew put it into the altitude alerter (14000 ft) and I confirmed this initially. My guess is that NAS departure thought they said 12000 ft when in fact they said 14000 ft.

Original NASA ASRS Text

Title: AT72 CREW HAD ALT OVERSHOOT IN MYNA CLASS E AIRSPACE.

Narrative: INITIAL CLB CLRNC TO 14000 FT MSL WAS GIVEN BY FIRST DEP CTLR WHILE CLBING THROUGH 12500 FT TO 14000 FT. THE SECOND DEP CTLR TOLD US THAT WE WERE GIVEN 12000 FT AS AN INITIAL ALT. WE DSNDED TO 12000 FT AND STAYED THERE UNTIL LEAVING NAS AIRSPACE. MANY TIMES AT NASSAU LCL CTLR PRONUNCIATIONS ARE DIFFICULT TO UNDERSTAND AT BEST, AND MISTAKES OFTEN OCCUR DUE TO THIS. MY CREW PUT IT INTO THE ALT ALERTER (14000 FT) AND I CONFIRMED THIS INITIALLY. MY GUESS IS THAT NAS DEP THOUGHT THEY SAID 12000 FT WHEN IN FACT THEY SAID 14000 FT.

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.