C172 aircraft on instructional flight, trnee pilot leveled 50 ft lower than MDA. Tower controller called with the low altitude alert at the same time instructor pilot was correcting.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	391940
Time
Date	199801
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : hfd
State Reference	CT
Altitude	msl bound lower : 600 msl bound upper : 640
Environment
Flight Conditions	Mixed
Light	Dusk
Aircraft 1
Controlling Facilities	tower : hfd
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : cfi pilot : commercial
Experience	flight time last 90 days : 50 flight time total : 825 flight time type : 300
ASRS Report	391940
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : student
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : published procedure other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was giving instrument flight instruction using the lda. At hfd ceilings were 800 ft, in VFR conditions. The student leveled off at 650 ft but lost 50 ft in a few seconds. The MDA at that point was still 640 ft MSL. I noticed the altitude bust and was going back up to 640 ft when brainerd tower called us to check altitude.

Original NASA ASRS Text

Title: C172 ACFT ON INSTRUCTIONAL FLT, TRNEE PLT LEVELED 50 FT LOWER THAN MDA. TWR CTLR CALLED WITH THE LOW ALT ALERT AT THE SAME TIME INSTRUCTOR PLT WAS CORRECTING.

Narrative: I WAS GIVING INST FLT INSTRUCTION USING THE LDA. AT HFD CEILINGS WERE 800 FT, IN VFR CONDITIONS. THE STUDENT LEVELED OFF AT 650 FT BUT LOST 50 FT IN A FEW SECONDS. THE MDA AT THAT POINT WAS STILL 640 FT MSL. I NOTICED THE ALT BUST AND WAS GOING BACK UP TO 640 FT WHEN BRAINERD TWR CALLED US TO CHK ALT.

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.