Altitude crossing restriction not met.

Attributes
ACN	228114
Time
Date	199212
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : iad airport : dca
State Reference	VA
Altitude	msl bound lower : 8000 msl bound upper : 9000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : iad
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent other
Route In Use	enroute : direct
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : cfi pilot : atp
Experience	flight time last 90 days : 100 flight time total : 8200 flight time type : 2800
ASRS Report	228114
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 177 flight time total : 10730 flight time type : 1530
ASRS Report	227938
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action flight crew : returned to intended course or assigned course
Consequence	Other
Miss Distance	horizontal : 0 vertical : 1500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Issued cross iad at 8000 ft, close in. First officer made confign changes necessary to expedite descent. At 9500 ft we received a TA on TCASII at 8500 ft we received a RA to climb. Traffic was not in sight but on TCASII showed 1500 ft below us. We began climb, informed ATC about RA and as soon as 'clear of conflict' was annunciated we began descent again. We did not make iad at 8000 ft due to the RA. Supplemental information from acn 227938. The TCASII altitude readout indicated that we had adequate clearance, so, I continued the descent in order to meet the 8000 ft crossing restriction.

Original NASA ASRS Text

Title: ALT XING RESTRICTION NOT MET.

Narrative: ISSUED CROSS IAD AT 8000 FT, CLOSE IN. FO MADE CONFIGN CHANGES NECESSARY TO EXPEDITE DSCNT. AT 9500 FT WE RECEIVED A TA ON TCASII AT 8500 FT WE RECEIVED A RA TO CLB. TFC WAS NOT IN SIGHT BUT ON TCASII SHOWED 1500 FT BELOW US. WE BEGAN CLB, INFORMED ATC ABOUT RA AND AS SOON AS 'CLR OF CONFLICT' WAS ANNUNCIATED WE BEGAN DSCNT AGAIN. WE DID NOT MAKE IAD AT 8000 FT DUE TO THE RA. SUPPLEMENTAL INFO FROM ACN 227938. THE TCASII ALT READOUT INDICATED THAT WE HAD ADEQUATE CLRNC, SO, I CONTINUED THE DSCNT IN ORDER TO MEET THE 8000 FT XING RESTRICTION.

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.