A PA46-500 ATP pilot confesses to losing 600 ft of altitude during his endeavors to extend his landing gear by emergency means after losing his hydraulic pump nne of dsm, ia.

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Attributes
ACN	599246
Time
Date	200311
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dsm.airport
State Reference	IA
Altitude	msl bound lower : 2400 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dsm.tracon
Operator	general aviation : personal
Make Model Name	PA-46 Malibu
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : visual arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : multi engine pilot : cfi pilot : atp pilot : commercial
Experience	flight time last 90 days : 25 flight time total : 11000 flight time type : 120
ASRS Report	599246
Person 2
Affiliation	government : faa
Function	controller : approach
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude conflict : ground less severe non adherence : clearance other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

I lost the hydraulic pump, called dsm approach advised them of the situation. In the process of extending the gear manually I got a left main and nose light. I had to yaw the aircraft for some time to get the right gear light to come on. In the process I lost approximately 600 ft altitude. I should have paid more attention to flying the aircraft and the gear problem should have been the 2ND priority.

Original NASA ASRS Text

Title: A PA46-500 ATP PLT CONFESSES TO LOSING 600 FT OF ALT DURING HIS ENDEAVORS TO EXTEND HIS LNDG GEAR BY EMER MEANS AFTER LOSING HIS HYD PUMP NNE OF DSM, IA.

Narrative: I LOST THE HYD PUMP, CALLED DSM APCH ADVISED THEM OF THE SIT. IN THE PROCESS OF EXTENDING THE GEAR MANUALLY I GOT A L MAIN AND NOSE LIGHT. I HAD TO YAW THE ACFT FOR SOME TIME TO GET THE R GEAR LIGHT TO COME ON. IN THE PROCESS I LOST APPROX 600 FT ALT. I SHOULD HAVE PAID MORE ATTN TO FLYING THE ACFT AND THE GEAR PROB SHOULD HAVE BEEN THE 2ND PRIORITY.

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.