A B737-900 eecs; master caution; speed tape; ivsi; altimeters and engine light showed malfunctioning...

Narrative:

At rotation I noticed airspeed discrepancy between captain's and first officer's airspeed tapes. It appeared first officer's was correct; so as flying pilot I transferred control to first officer. Shortly thereafter we got a master caution and engine light; and I noticed both eecs were in the alternate mode. The first officer continued flying as he had good instruments; but we had discrepancies between airspeed ivsi and altimeter indications and the IAS disagree light was on. The QRH was accomplished for eec in the alternate mode; and we returned to the departure airport for an overweight landing. Landing was uneventful except as we configured for landing we got intermittent stick shaker indications with the captain's airspeed tape reading approximately 45 KIAS. The cause was an aircraft component malfunction.

Original NASA ASRS Text

Title: A B737-900 EECs; Master Caution; Speed Tape; IVSI; altimeters and engine light showed malfunctioning systems so the Captain transferred control to the First Officer whose instruments were more accurate and the flight returned to land.

Narrative: At rotation I noticed airspeed discrepancy between Captain's and First Officer's airspeed tapes. It appeared First Officer's was correct; so as flying pilot I transferred control to First Officer. Shortly thereafter we got a Master Caution and Engine light; and I noticed both EECs were in the alternate mode. The First Officer continued flying as he had good instruments; but we had discrepancies between airspeed IVSI and altimeter indications and the IAS disagree light was on. The QRH was accomplished for EEC in the alternate mode; and we returned to the departure airport for an overweight landing. Landing was uneventful except as we configured for landing we got intermittent stick shaker indications with the Captain's airspeed tape reading approximately 45 KIAS. The cause was an Aircraft Component Malfunction.

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	1063937
Time
Date	201301
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	B737-900
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

A B737-900 eecs; master caution; speed tape; ivsi; altimeters and engine light showed malfunctioning systems so the captain transferred control to the first officer whose instruments were more accurate and the flight returned to land.