A cpr lear 25D flight crew descends below FL310 assigned while distraction by socializing.

Attributes
ACN	343750
Time
Date	199608
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : rlg
State Reference	CO
Altitude	msl bound lower : 30500 msl bound upper : 31000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdv
Operator	general aviation : corporate
Make Model Name	Learjet 25
Operating Under FAR Part	Part 91
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 60 flight time total : 8860 flight time type : 2700
ASRS Report	343750
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : overshoot non adherence : clearance non adherence : far
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

In descending to assigned FL310 from FL390, descent was continued briefly (less than 30 seconds) to FL305, 500 ft below assigned. I overshot my altitude due to lack of attention in cockpit. Copilot and I were engaged in a non flying related subject.

Original NASA ASRS Text

Title: A CPR LEAR 25D FLC DSNDS BELOW FL310 ASSIGNED WHILE DISTR BY SOCIALIZING.

Narrative: IN DSNDING TO ASSIGNED FL310 FROM FL390, DSCNT WAS CONTINUED BRIEFLY (LESS THAN 30 SECONDS) TO FL305, 500 FT BELOW ASSIGNED. I OVERSHOT MY ALT DUE TO LACK OF ATTN IN COCKPIT. COPLT AND I WERE ENGAGED IN A NON FLYING RELATED SUBJECT.

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.