B737 first officer reports numerous electrical malfunctions on departure which correct themselves th...

Attributes
ACN	801333
Time
Date	200808
Place
Locale Reference	airport : zzz.airport
State Reference	US
Aircraft 1
Controlling Facilities	tracon : zzz.tracon
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	801333
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : diverted to another airport flight crew : landed in emergency condition
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Departed ZZZ as scheduled. During climb out first officer's flight instruments failed. All flags appeared. Autoplt disengaged; flight instruments returned to normal and then failed again starting a cycle of this pattern. Ir 2 failed then appeared to come back. We decided to return to ZZZ; requested xxr. As we were vectored back for the approach in ZZZ various annunciator lights came on then would extinguish. (No bus off lights ever illuminated.) lights: automatic brake inoperative; right pitot static; forward cargo/aft cargo; #2 electric hydraulic low pressure; left forward/aft right fuel pump low pressure. Equipment. Electric trim was inoperative; #2 communication inoperative. Landed uneventfully; TR2 and TR3 had popped respective breakers. WX was VFR; landing weight was 120.5 pounds.

Original NASA ASRS Text

Title: B737 FO REPORTS NUMEROUS ELECTRICAL MALFUNCTIONS ON DEPARTURE WHICH CORRECT THEMSELVES THEN REAPPEAR. FLT CREW RETURNS TO DEPARTURE ARPT.

Narrative: DEPARTED ZZZ AS SCHEDULED. DURING CLBOUT FO'S FLT INSTS FAILED. ALL FLAGS APPEARED. AUTOPLT DISENGAGED; FLT INSTS RETURNED TO NORMAL AND THEN FAILED AGAIN STARTING A CYCLE OF THIS PATTERN. IR 2 FAILED THEN APPEARED TO COME BACK. WE DECIDED TO RETURN TO ZZZ; REQUESTED XXR. AS WE WERE VECTORED BACK FOR THE APCH IN ZZZ VARIOUS ANNUNCIATOR LIGHTS CAME ON THEN WOULD EXTINGUISH. (NO BUS OFF LIGHTS EVER ILLUMINATED.) LIGHTS: AUTO BRAKE INOP; R PITOT STATIC; FORWARD CARGO/AFT CARGO; #2 ELECTRIC HYD LOW PRESSURE; L FORWARD/AFT R FUEL PUMP LOW PRESSURE. EQUIP. ELECTRIC TRIM WAS INOP; #2 COM INOP. LANDED UNEVENTFULLY; TR2 AND TR3 HAD POPPED RESPECTIVE BREAKERS. WX WAS VFR; LNDG WT WAS 120.5 LBS.

Data retrieved from NASA's ASRS site as of May 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.

B737 first officer reports numerous electrical malfunctions on departure which correct themselves then reappear. Flight crew returns to departure airport.