H25B reduced below ATC assigned speed during climb with ZAB.

Attributes
ACN	606600
Time
Date	200401
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sdl.airport
State Reference	AZ
Altitude	msl single value : 26000
Environment
Flight Conditions	VMC
Weather Elements	Turbulence
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zab.artcc
Operator	general aviation : corporate
Make Model Name	BAe 125 Series 800
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 10000 flight time type : 1300
ASRS Report	606600
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Events
Anomaly	non adherence : clearance other anomaly
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Weather Environmental Factor Aircraft
Primary Problem	Aircraft

Narrative:

Crr assigned us a climb speed of 300 KTS. We encountered light to moderate turbulence. The aircraft lost approximately 20 KTS of airspeed. The center frequency was fairly busy and we had not been able to report the loss of speed. We additionally had a right main gear unsafe light that was intermittently flashing. Center called and asked what speed we were at and I reported 290 KTS. He cleared us to maintain FL270. Due to how busy the center was, we were unable to explain our loss of speed. Additionally, the aircraft climbs poorly at high speed and high altitude combined. This is the reason we lost airspeed while in turbulence.

Original NASA ASRS Text

Title: H25B REDUCED BELOW ATC ASSIGNED SPD DURING CLB WITH ZAB.

Narrative: CRR ASSIGNED US A CLB SPD OF 300 KTS. WE ENCOUNTERED LIGHT TO MODERATE TURB. THE ACFT LOST APPROX 20 KTS OF AIRSPD. THE CTR FREQ WAS FAIRLY BUSY AND WE HAD NOT BEEN ABLE TO RPT THE LOSS OF SPD. WE ADDITIONALLY HAD A R MAIN GEAR UNSAFE LIGHT THAT WAS INTERMITTENTLY FLASHING. CTR CALLED AND ASKED WHAT SPD WE WERE AT AND I RPTED 290 KTS. HE CLRED US TO MAINTAIN FL270. DUE TO HOW BUSY THE CTR WAS, WE WERE UNABLE TO EXPLAIN OUR LOSS OF SPD. ADDITIONALLY, THE ACFT CLBS POORLY AT HIGH SPD AND HIGH ALT COMBINED. THIS IS THE REASON WE LOST AIRSPD WHILE IN TURB.

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.