Altitude deviation altitude overshot in descent.

Attributes
ACN	314888
Time
Date	199509
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : pdx
State Reference	OR
Altitude	msl bound lower : 7800 msl bound upper : 9000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zse
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 135
Flight Phase	descent other
Route In Use	enroute airway : zse
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp pilot : cfi pilot : commercial
Experience	flight time last 90 days : 240 flight time total : 11000 flight time type : 6000
ASRS Report	314888
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 300 flight time total : 7000 flight time type : 2500
ASRS Report	314890
Events
Anomaly	altitude deviation : overshoot non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Received clearance to descend to 9000 ft by 25 mi from portland VOR. ATC questioned altitude at 7800 ft. Confirmed and received clearance to hold 8000 ft. One reason for occurrence, many of our aircraft have altitude alerters, this one does not. Supplemental information from acn 314890: this was due to checklists, communication with company and no altitude warning device on this aircraft.

Original NASA ASRS Text

Title: ALT DEV ALT OVERSHOT IN DSCNT.

Narrative: RECEIVED CLRNC TO DSND TO 9000 FT BY 25 MI FROM PORTLAND VOR. ATC QUESTIONED ALT AT 7800 FT. CONFIRMED AND RECEIVED CLRNC TO HOLD 8000 FT. ONE REASON FOR OCCURRENCE, MANY OF OUR ACFT HAVE ALT ALERTERS, THIS ONE DOES NOT. SUPPLEMENTAL INFO FROM ACN 314890: THIS WAS DUE TO CHKLISTS, COM WITH COMPANY AND NO ALT WARNING DEVICE ON THIS ACFT.

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.