Air carrier medium large transport altitude deviation undershot crossing restriction.

Attributes
ACN	159786
Time
Date	199010
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : hnk
State Reference	NY
Altitude	msl bound lower : 19000 msl bound upper : 22000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zny
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other descent other
Route In Use	enroute airway : zny
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 230 flight time total : 2400 flight time type : 750
ASRS Report	159786
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : clearance
Independent Detector	other controllera
Resolutory Action	none taken : insufficient time
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Clearance was given to cross 10 NM southeast of hancock VOR at FL190. We were level at FL220 (50 NM west of hnk). Captain was flying. He mentioned that we would start down just before crossing hancock. Just before hnk the captain gave me control of the aircraft so that he could look something up in the flight manual. We both forgot the restriction until queried by ATC. At that time a descent was started and we leveled at FL190 at 12.5 southeast of hnk. There was no traffic conflict and ATC said no problem. When control of the aircraft is changed (or at any other time, for that matter) both pilots need to be aware of all clrncs, not just the PF. In our case, when I took control of the aircraft, I had not been paying attention to aircraft position, and the captain disregarded aircraft position, therefore putting us both out of the picture. In the future, besides being more aware of our position and checking the PF's performance, when aircraft control is changed, I will verify all clrncs and check what the PF expects me to do in order to comply with them.

Original NASA ASRS Text

Title: ACR MLG ALT DEVIATION UNDERSHOT CROSSING RESTRICTION.

Narrative: CLRNC WAS GIVEN TO CROSS 10 NM SE OF HANCOCK VOR AT FL190. WE WERE LEVEL AT FL220 (50 NM W OF HNK). CAPT WAS FLYING. HE MENTIONED THAT WE WOULD START DOWN JUST BEFORE XING HANCOCK. JUST BEFORE HNK THE CAPT GAVE ME CTL OF THE ACFT SO THAT HE COULD LOOK SOMETHING UP IN THE FLT MANUAL. WE BOTH FORGOT THE RESTRICTION UNTIL QUERIED BY ATC. AT THAT TIME A DSNT WAS STARTED AND WE LEVELED AT FL190 AT 12.5 SE OF HNK. THERE WAS NO TFC CONFLICT AND ATC SAID NO PROB. WHEN CTL OF THE ACFT IS CHANGED (OR AT ANY OTHER TIME, FOR THAT MATTER) BOTH PLTS NEED TO BE AWARE OF ALL CLRNCS, NOT JUST THE PF. IN OUR CASE, WHEN I TOOK CTL OF THE ACFT, I HAD NOT BEEN PAYING ATTN TO ACFT POS, AND THE CAPT DISREGARDED ACFT POS, THEREFORE PUTTING US BOTH OUT OF THE PICTURE. IN THE FUTURE, BESIDES BEING MORE AWARE OF OUR POS AND CHKING THE PF'S PERFORMANCE, WHEN ACFT CTL IS CHANGED, I WILL VERIFY ALL CLRNCS AND CHK WHAT THE PF EXPECTS ME TO DO IN ORDER TO COMPLY WITH THEM.

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.