Commuter descends below crossing altitude, misses crossing restriction.

Attributes
ACN	241663
Time
Date	199305
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : iah
State Reference	TX
Altitude	msl bound lower : 8000 msl bound upper : 9000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zny
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	enroute : on vectors enroute airway : zhu
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 270 flight time total : 5000 flight time type : 4000
ASRS Report	241663
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : excursion from assigned altitude altitude deviation : crossing restriction not met non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : became reoriented other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Out of FL240 received clearance to cross gland intersection at 9000 ft after intercepting iad 234 degree radial. We were then vectored through airway for traffic. As I was correcting a loud propeller sync noise, clearance was received by PNF, first officer, to fly 070 degree radial and rejoin the arrival and cross gland intersection at 9000 ft. We were already at 9000 ft. I did not hear the clearance and when PNF relayed to me she stated we were to cross gland intersection at 7000 ft. We discussed this because it seemed strange, but due to recent vectors we thought he needed us lower. Center called us at 8000 ft and we offered to go back to 9000 ft but he said he worked it out. Always verify. Further conversations with company aircraft pilots indicated that my PNF had actually read back 9000 ft but had actually set 7000 ft in the altitude window and told me 7000 ft.

Original NASA ASRS Text

Title: COMMUTER DSNDS BELOW XING ALT, MISSES XING RESTRICTION.

Narrative: OUT OF FL240 RECEIVED CLRNC TO CROSS GLAND INTXN AT 9000 FT AFTER INTERCEPTING IAD 234 DEG RADIAL. WE WERE THEN VECTORED THROUGH AIRWAY FOR TFC. AS I WAS CORRECTING A LOUD PROP SYNC NOISE, CLRNC WAS RECEIVED BY PNF, FO, TO FLY 070 DEG RADIAL AND REJOIN THE ARR AND CROSS GLAND INTXN AT 9000 FT. WE WERE ALREADY AT 9000 FT. I DID NOT HEAR THE CLRNC AND WHEN PNF RELAYED TO ME SHE STATED WE WERE TO CROSS GLAND INTXN AT 7000 FT. WE DISCUSSED THIS BECAUSE IT SEEMED STRANGE, BUT DUE TO RECENT VECTORS WE THOUGHT HE NEEDED US LOWER. CTR CALLED US AT 8000 FT AND WE OFFERED TO GO BACK TO 9000 FT BUT HE SAID HE WORKED IT OUT. ALWAYS VERIFY. FURTHER CONVERSATIONS WITH COMPANY ACFT PLTS INDICATED THAT MY PNF HAD ACTUALLY READ BACK 9000 FT BUT HAD ACTUALLY SET 7000 FT IN THE ALT WINDOW AND TOLD ME 7000 FT.

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.