A light twin charter pilot starts a climb above his assigned by ZMP and received through FSS at FOD,...

Attributes
ACN	495110
Time
Date	200012
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zmp.artcc
State Reference	IA
Altitude	msl bound lower : 4000 msl bound upper : 4100
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zmp.artcc
Operator	common carrier : charter
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Operating Under FAR Part	Part 135
Flight Phase	climbout : vacating altitude
Route In Use	departure : other published ifr departure
Flight Plan	IFR
Person 1
Affiliation	company : charter
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : cfi pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 170 flight time total : 16500 flight time type : 150
ASRS Report	495110
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued alert flight crew : returned to assigned altitude
Consequence	faa : investigated faa : reviewed incident with flight crew other
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was on the ground at estherville, ia, and called FSS to get a clearance (void time). It was brought to my attention that I did indeed read back 4000 ft for an altitude to FSS (after tapes were reviewed), but in my mind thought 5000 ft. I checked on with ZMP and 'apparently' reported 4100 ft climbing to 5000 ft. They quickly interjected and said 'I need you to stay at 4000 ft for crossing traffic, did FSS assign you 5000 ft in your clearance?' I was certain in my mind that they did, so I said 'yes.' that was the last I ever heard about it until my director of operations brought to my attention that ZMP called about this occurrence. Let it be known that I never climbed above 4100 ft and corrected back to 4000 ft immediately. To prevent this from happening again, I will be much more cautious when copying, reading back, and complying with clrncs.

Original NASA ASRS Text

Title: A LIGHT TWIN CHARTER PLT STARTS A CLB ABOVE HIS ASSIGNED BY ZMP AND RECEIVED THROUGH FSS AT FOD, IA.

Narrative: I WAS ON THE GND AT ESTHERVILLE, IA, AND CALLED FSS TO GET A CLRNC (VOID TIME). IT WAS BROUGHT TO MY ATTN THAT I DID INDEED READ BACK 4000 FT FOR AN ALT TO FSS (AFTER TAPES WERE REVIEWED), BUT IN MY MIND THOUGHT 5000 FT. I CHKED ON WITH ZMP AND 'APPARENTLY' RPTED 4100 FT CLBING TO 5000 FT. THEY QUICKLY INTERJECTED AND SAID 'I NEED YOU TO STAY AT 4000 FT FOR XING TFC, DID FSS ASSIGN YOU 5000 FT IN YOUR CLRNC?' I WAS CERTAIN IN MY MIND THAT THEY DID, SO I SAID 'YES.' THAT WAS THE LAST I EVER HEARD ABOUT IT UNTIL MY DIRECTOR OF OPS BROUGHT TO MY ATTN THAT ZMP CALLED ABOUT THIS OCCURRENCE. LET IT BE KNOWN THAT I NEVER CLBED ABOVE 4100 FT AND CORRECTED BACK TO 4000 FT IMMEDIATELY. TO PREVENT THIS FROM HAPPENING AGAIN, I WILL BE MUCH MORE CAUTIOUS WHEN COPYING, READING BACK, AND COMPLYING WITH CLRNCS.

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.

A light twin charter pilot starts a climb above his assigned by ZMP and received through FSS at FOD, ia.