<< >> NASA ASRS Report 331590, March 1996

Flight crew cleared to cross intersection at 13000 ft, using VNAV descent got behind the descent profile and couldn't make the restr.

Attributes
ACN	331590
Time
Date	199603
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : fjc
State Reference	PA
Altitude	msl bound lower : 13000 msl bound upper : 15000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	arrival star : star enroute airway : zny
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 3000
ASRS Report	331590
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : undershoot non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were flying the milton 8 arrival to lga and were given a clearance to cross vibes at 13000 ft. The aircraft was in a VNAV descent mode when I noticed that we were approximately 3-4 mi from vibes and still at approximately 18000 ft. At this point the captain selected flight level change and extended the speed brakes, resulting in a descent rate of 5000-6000 FPM. We crossed vibes at approximately 15000 ft in a rapid descent. We discussed this with center and no conflicts were noted.

Related reports:

• When cleared to descend via a STAR; the flight crew of an A3...
• Flight crew was cleared to cross aldan at 8000 ft. The first...
• Cleared to cross an intersection at 17000 ft MSL; flight cre...
• When cleared to cross baath intersection at an altitude, fli...
• Cleared to cross bball intersection at 11000 ft, flight crew...
• Flight crew of B717, cleared to runway 19R at intersection V...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: FLC CLRED TO CROSS INTXN AT 13000 FT, USING VNAV DSCNT GOT BEHIND THE DSCNT PROFILE AND COULDN'T MAKE THE RESTR.

Narrative: WE WERE FLYING THE MILTON 8 ARR TO LGA AND WERE GIVEN A CLRNC TO CROSS VIBES AT 13000 FT. THE ACFT WAS IN A VNAV DSCNT MODE WHEN I NOTICED THAT WE WERE APPROX 3-4 MI FROM VIBES AND STILL AT APPROX 18000 FT. AT THIS POINT THE CAPT SELECTED FLT LEVEL CHANGE AND EXTENDED THE SPD BRAKES, RESULTING IN A DSCNT RATE OF 5000-6000 FPM. WE CROSSED VIBES AT APPROX 15000 FT IN A RAPID DSCNT. WE DISCUSSED THIS WITH CTR AND NO CONFLICTS WERE NOTED.

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.