Flight crew of GLF5, distraction by multiple failures annunciated on their malfunction warning syste...

Attributes
ACN	600344
Time
Date	200311
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : grr.airport
State Reference	MI
Altitude	msl bound lower : 19000 msl bound upper : 22800
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zau.artcc
Operator	general aviation : corporate
Make Model Name	Gulfstream V
Operating Under FAR Part	Part 121
Navigation In Use	other other vortac
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 125 flight time total : 8350 flight time type : 250
ASRS Report	600344
Person 2
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical altitude deviation : overshoot non adherence : company policies non adherence : far non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance controller : issued advisory
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Company Aircraft
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

I was the first officer, PNF occupying the right seat of a gv on an IFR repositioning flight from grr to pbi. We were talking with ZAU and had been cleared direct to fwa VOR and cleared to an altitude of FL190. As we passed through FL180 and changed our altimeters to 29.92, we began getting failure messages on our message screen. The first message was air data computer #1 fail followed by numerous other messages which were appearing and then clearing. While trying to interpretation what was happening and determine what data was accurate, we climbed through our assigned FL190 to FL228. Chicago called us and asked our assigned altitude at which time we reported the FL228 where we had arrested the climb. We told him of our problem and asked for an immediate return to grr at which time he cleared us to turn left direct to grr and then to descend to lower altitude. We were still unsure of the reliability of our instruments and compared them with our standby instruments until landing to ensure accuracy. We also made grr approach aware of out situation and had them monitor our ground path and altitude readouts. Failure messages were appearing and going away so rapidly during the episode that we were unable to determine what the main problem was. We had as many as 10 failure messages at a time appearing. Failure to level at FL190 was caused by failure of the afcs complicated by the multiple other failures including instrumentation.

Original NASA ASRS Text

Title: FLT CREW OF GLF5, DISTR BY MULTIPLE FAILURES ANNUNCIATED ON THEIR MALFUNCTION WARNING SYS FAIL TO MONITOR FLT PATH AND CLB THROUGH CLRED ALT.

Narrative: I WAS THE FO, PNF OCCUPYING THE R SEAT OF A GV ON AN IFR REPOSITIONING FLT FROM GRR TO PBI. WE WERE TALKING WITH ZAU AND HAD BEEN CLRED DIRECT TO FWA VOR AND CLRED TO AN ALT OF FL190. AS WE PASSED THROUGH FL180 AND CHANGED OUR ALTIMETERS TO 29.92, WE BEGAN GETTING FAILURE MESSAGES ON OUR MESSAGE SCREEN. THE FIRST MESSAGE WAS ADC #1 FAIL FOLLOWED BY NUMEROUS OTHER MESSAGES WHICH WERE APPEARING AND THEN CLRING. WHILE TRYING TO INTERP WHAT WAS HAPPENING AND DETERMINE WHAT DATA WAS ACCURATE, WE CLBED THROUGH OUR ASSIGNED FL190 TO FL228. CHICAGO CALLED US AND ASKED OUR ASSIGNED ALT AT WHICH TIME WE RPTED THE FL228 WHERE WE HAD ARRESTED THE CLB. WE TOLD HIM OF OUR PROB AND ASKED FOR AN IMMEDIATE RETURN TO GRR AT WHICH TIME HE CLRED US TO TURN L DIRECT TO GRR AND THEN TO DSND TO LOWER ALT. WE WERE STILL UNSURE OF THE RELIABILITY OF OUR INSTS AND COMPARED THEM WITH OUR STANDBY INSTS UNTIL LNDG TO ENSURE ACCURACY. WE ALSO MADE GRR APCH AWARE OF OUT SIT AND HAD THEM MONITOR OUR GND PATH AND ALT READOUTS. FAILURE MESSAGES WERE APPEARING AND GOING AWAY SO RAPIDLY DURING THE EPISODE THAT WE WERE UNABLE TO DETERMINE WHAT THE MAIN PROB WAS. WE HAD AS MANY AS 10 FAILURE MESSAGES AT A TIME APPEARING. FAILURE TO LEVEL AT FL190 WAS CAUSED BY FAILURE OF THE AFCS COMPLICATED BY THE MULTIPLE OTHER FAILURES INCLUDING INSTRUMENTATION.

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 GLF5, distraction by multiple failures annunciated on their malfunction warning system fail to monitor flight path and climb through cleared altitude.