Altitude deviation for medium large transport into mlp.

Attributes
ACN	445294
Time
Date	199908
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : geg.airport
State Reference	WA
Altitude	msl bound lower : 8900 msl bound upper : 10000
Environment
Flight Conditions	IMC
Weather Elements	Thunderstorm Turbulence
Light	Night
Aircraft 1
Controlling Facilities	tracon : geg.tracon
Operator	common carrier : air carrier
Make Model Name	F-28 Enstrom Helicopter
Operating Under FAR Part	Part 121
Flight Phase	climbout : vacating altitude descent : intermediate altitude descent : vacating altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 70 flight time total : 12000 flight time type : 3600
ASRS Report	445294
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer oversight : pic
Qualification	pilot : atp pilot : commercial
Experience	flight time last 90 days : 96 flight time total : 20625 flight time type : 10
ASRS Report	444990
Events
Anomaly	inflight encounter : weather non adherence : clearance non adherence : far
Independent Detector	other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : became reoriented
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance Weather Environmental Factor
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

The flight cleared from FL290 to 15000 ft. During the descent the flight was cleared to intercept the transition from mlp to mso localizer and maintain 10000 ft. The transition was flown and the localizer was intercepted. Both crew members recall being cleared for the approach via the transition however while descending on the localizer and on GS, the approach controller called and commented that the altitude clearance was for 10000 ft. The flight was then passing 8900 ft MSL. The approach lights and runway were in sight and the controller was so advised. Clearance was then given and the visual approach was made with no difficulties. Causal factors included high workload due to flight around mountainous terrain, first day of IOE for a new captain, turbulence and thunderstorms in the vicinity. Closer attention to the instructions given by the approach controller and hearing only what is expected instead of what is actually given.

Original NASA ASRS Text

Title: ALTDEV FOR MLG INTO MLP.

Narrative: THE FLT CLRED FROM FL290 TO 15000 FT. DURING THE DSCNT THE FLT WAS CLRED TO INTERCEPT THE TRANSITION FROM MLP TO MSO LOC AND MAINTAIN 10000 FT. THE TRANSITION WAS FLOWN AND THE LOC WAS INTERCEPTED. BOTH CREW MEMBERS RECALL BEING CLRED FOR THE APCH VIA THE TRANSITION HOWEVER WHILE DSNDING ON THE LOC AND ON GS, THE APCH CTLR CALLED AND COMMENTED THAT THE ALT CLRNC WAS FOR 10000 FT. THE FLT WAS THEN PASSING 8900 FT MSL. THE APCH LIGHTS AND RWY WERE IN SIGHT AND THE CTLR WAS SO ADVISED. CLRNC WAS THEN GIVEN AND THE VISUAL APCH WAS MADE WITH NO DIFFICULTIES. CAUSAL FACTORS INCLUDED HIGH WORKLOAD DUE TO FLT AROUND MOUNTAINOUS TERRAIN, FIRST DAY OF IOE FOR A NEW CAPT, TURB AND TSTMS IN THE VICINITY. CLOSER ATTN TO THE INSTRUCTIONS GIVEN BY THE APCH CTLR AND HEARING ONLY WHAT IS EXPECTED INSTEAD OF WHAT IS ACTUALLY GIVEN.

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.