B767-300 flight crew has incorrect vmo indication; declares emergency and diverts for landing.

Attributes
ACN	713904
Time
Date	200610
Place
Locale Reference	navaid : zzv.vor
State Reference	US
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : relief pilot
ASRS Report	713904
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Events
Anomaly	aircraft equipment problem : critical non adherence : published procedure
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : declared emergency flight crew : diverted to another airport
Consequence	other other
Supplementary
Problem Areas	Maintenance Human Performance Aircraft Company
Primary Problem	Maintenance Human Performance

Narrative:

After takeoff the crew realized that both the captain and first officer barber poles were at 260 KTS. Check QRH and FM vol #1 tried altitude air data computer. Consulted with dispatch and maintenance. Captain and dispatcher decided to divert to jfk. Captain declared emergency; proceeded to jfk and made an overweight landing. Supplemental information from acn 713921: employee found vmo/mmo switch in altitude position. Look closer at cover switch to make sure is in normal position.

Original NASA ASRS Text

Title: B767-300 FLT CREW HAS INCORRECT VMO INDICATION; DECLARES EMER AND DIVERTS FOR LNDG.

Narrative: AFTER TKOF THE CREW REALIZED THAT BOTH THE CAPT AND FO BARBER POLES WERE AT 260 KTS. CHK QRH AND FM VOL #1 TRIED ALT ADC. CONSULTED WITH DISPATCH AND MAINT. CAPT AND DISPATCHER DECIDED TO DIVERT TO JFK. CAPT DECLARED EMER; PROCEEDED TO JFK AND MADE AN OVERWT LNDG. SUPPLEMENTAL INFO FROM ACN 713921: EMPLOYEE FOUND VMO/MMO SWITCH IN ALT POS. LOOK CLOSER AT COVER SWITCH TO MAKE SURE IS IN NORMAL POS.

Data retrieved from NASA's ASRS site as of January 2009 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.