Flight crew of air carrier medium large transport aircraft experienced a multi master warning of an ...

Attributes
ACN	225086
Time
Date	199211
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : phl
State Reference	PA
Altitude	msl bound lower : 2000 msl bound upper : 2000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : phl
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 240 flight time total : 8000 flight time type : 2000
ASRS Report	225086
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 8500 flight time type : 150
ASRS Report	225422
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On departure from 27R at phl passing 2000 ft received multiple warnings/alerts from MFDU (multi-function display) MFDU inoperative. Tgt overlimit #2 engine, N1 overspd #2 engine, light on start lever #2. Master warning triple chime alert. The primary MFDU displaying engine parameters were in limits at all times (would change color on tape display if out of limits). I also disengaged autothrottles and pulled engine #2 to idle to see if this would change anything and it did not. The warnings/alerts display was continuously intermittent white/red (white being -- condition no longer exists). I requested a return to field from departure and we made an uneventful landing and secured engine after clearing runway. I never shut down #2 engine as I felt this was a warning computer fault not an actual exceedance. No emergency was declared. One problem with this situation was a triple chime alert (highest alert condition) which could not be selected without shutting down the engine. I did have to secure the master audio warning (securing all audio alerts) in order to silence the alert. I believe that this was a design flaw in the aircraft. You should be able to secure any alert audio by pressing on the master warning light which would continue to flash red. The audio was very distracting.

Original NASA ASRS Text

Title: FLC OF ACR MLG ACFT EXPERIENCED A MULTI MASTER WARNING OF AN ENG PROBLEM RIGHT AFTER TKOF AND RETURNED TO LAND.

Narrative: ON DEP FROM 27R AT PHL PASSING 2000 FT RECEIVED MULTIPLE WARNINGS/ALERTS FROM MFDU (MULTI-FUNCTION DISPLAY) MFDU INOP. TGT OVERLIMIT #2 ENG, N1 OVERSPD #2 ENG, LIGHT ON START LEVER #2. MASTER WARNING TRIPLE CHIME ALERT. THE PRIMARY MFDU DISPLAYING ENG PARAMETERS WERE IN LIMITS AT ALL TIMES (WOULD CHANGE COLOR ON TAPE DISPLAY IF OUT OF LIMITS). I ALSO DISENGAGED AUTOTHROTTLES AND PULLED ENG #2 TO IDLE TO SEE IF THIS WOULD CHANGE ANYTHING AND IT DID NOT. THE WARNINGS/ALERTS DISPLAY WAS CONTINUOUSLY INTERMITTENT WHITE/RED (WHITE BEING -- CONDITION NO LONGER EXISTS). I REQUESTED A RETURN TO FIELD FROM DEP AND WE MADE AN UNEVENTFUL LNDG AND SECURED ENG AFTER CLRING RWY. I NEVER SHUT DOWN #2 ENG AS I FELT THIS WAS A WARNING COMPUTER FAULT NOT AN ACTUAL EXCEEDANCE. NO EMER WAS DECLARED. ONE PROBLEM WITH THIS SITUATION WAS A TRIPLE CHIME ALERT (HIGHEST ALERT CONDITION) WHICH COULD NOT BE SELECTED WITHOUT SHUTTING DOWN THE ENG. I DID HAVE TO SECURE THE MASTER AUDIO WARNING (SECURING ALL AUDIO ALERTS) IN ORDER TO SILENCE THE ALERT. I BELIEVE THAT THIS WAS A DESIGN FLAW IN THE ACFT. YOU SHOULD BE ABLE TO SECURE ANY ALERT AUDIO BY PRESSING ON THE MASTER WARNING LIGHT WHICH WOULD CONTINUE TO FLASH RED. THE AUDIO WAS VERY DISTRACTING.

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.

Flight crew of air carrier medium large transport aircraft experienced a multi master warning of an engine problem right after takeoff and returned to land.