<< >> NASA ASRS Report 596523, October 2003

Chs local controller apparently issues a low altitude alert to DC8-70 flight crew on VOR runway 3L approach who initiated early descent on a 4 mi final.

Attributes
ACN	596523
Time
Date	200310
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : chs.airport
State Reference	SC
Altitude	msl bound lower : 420 msl bound upper : 1100
Environment
Flight Conditions	IMC
Weather Elements	Fog Rain
Light	Daylight
Aircraft 1
Controlling Facilities	tower : chs.tower
Operator	common carrier : air carrier
Make Model Name	DC-8 70
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 20 flight time total : 8000 flight time type : 3500
ASRS Report	596523
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	inflight encounter : weather non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	atc equipment : msaw atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : issued alert flight crew : became reoriented flight crew : took evasive action
Supplementary
Problem Areas	Weather Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During approach into chs, approach runway 3 VOR DME. When within 10 DME of the VOR, a descent is permitted from 1600 ft MSL to 1100 ft MSL. When within 4 DME of the VOR, a descent is permitted from 1100 ft MSL to 400 ft MSL. I unintentionally descended to 420 ft MSL prior to 4 DME. All other parts of the approach and landing were normal.

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Original NASA ASRS Text

Title: CHS LCL CTLR APPARENTLY ISSUES A LOW ALT ALERT TO DC8-70 FLT CREW ON VOR RWY 3L APCH WHO INITIATED EARLY DSCNT ON A 4 MI FINAL.

Narrative: DURING APCH INTO CHS, APCH RWY 3 VOR DME. WHEN WITHIN 10 DME OF THE VOR, A DSCNT IS PERMITTED FROM 1600 FT MSL TO 1100 FT MSL. WHEN WITHIN 4 DME OF THE VOR, A DSCNT IS PERMITTED FROM 1100 FT MSL TO 400 FT MSL. I UNINTENTIONALLY DSNDED TO 420 FT MSL PRIOR TO 4 DME. ALL OTHER PARTS OF THE APCH AND LNDG WERE NORMAL.

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.