<< >> NASA ASRS Report 362710, March 1997

PIC of cpr jet descends too low during a vectored turn onto the localizer at hya. Text indicates a late descent clearance, close in to the LOM.

Attributes
ACN	362710
Time
Date	199703
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : hya
State Reference	MA
Altitude	msl bound lower : 1400 msl bound upper : 1800
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : hya
Operator	general aviation : corporate
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other descent : approach descent other
Route In Use	arrival other enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 105 flight time total : 5425 flight time type : 70
ASRS Report	362710
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : overshoot non adherence : clearance other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : became reoriented
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

The IFR flight originated in boston. Hyannis, ma, was the destination. While being vectored to the final approach course we were cleared to descend and maintain 1800 ft. The descent required a high rate of descent as well as a left turn to intercept the ILS course. I was hand flying the aircraft and descended to 1400 ft during the descending turn. We corrected our altitude immediately and the controller acknowledged the correction. This deviation is attributable to inexperience in the aircraft and a loss of situational awareness while hand flying in an environment with high density characteristics. I am not accustomed to the rapid directives often encountered in the northeast corridor and became distraction by rapid vectoring instructions. Although hand flying is good to gain operational feel for a new type, this situation would have been better handled by use of the autoplt

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Original NASA ASRS Text

Title: PIC OF CPR JET DSNDS TOO LOW DURING A VECTORED TURN ONTO THE LOC AT HYA. TEXT INDICATES A LATE DSCNT CLRNC, CLOSE IN TO THE LOM.

Narrative: THE IFR FLT ORIGINATED IN BOSTON. HYANNIS, MA, WAS THE DEST. WHILE BEING VECTORED TO THE FINAL APCH COURSE WE WERE CLRED TO DSND AND MAINTAIN 1800 FT. THE DSCNT REQUIRED A HIGH RATE OF DSCNT AS WELL AS A L TURN TO INTERCEPT THE ILS COURSE. I WAS HAND FLYING THE ACFT AND DSNDED TO 1400 FT DURING THE DSNDING TURN. WE CORRECTED OUR ALT IMMEDIATELY AND THE CTLR ACKNOWLEDGED THE CORRECTION. THIS DEV IS ATTRIBUTABLE TO INEXPERIENCE IN THE ACFT AND A LOSS OF SITUATIONAL AWARENESS WHILE HAND FLYING IN AN ENVIRONMENT WITH HIGH DENSITY CHARACTERISTICS. I AM NOT ACCUSTOMED TO THE RAPID DIRECTIVES OFTEN ENCOUNTERED IN THE NE CORRIDOR AND BECAME DISTR BY RAPID VECTORING INSTRUCTIONS. ALTHOUGH HAND FLYING IS GOOD TO GAIN OPERATIONAL FEEL FOR A NEW TYPE, THIS SIT WOULD HAVE BEEN BETTER HANDLED BY USE OF THE AUTOPLT

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.