Narrative:

Single pilot part 135 cargo flight. Climbing out of bfi, controller assigned 9000, then 11000, then 4000'. Pilot inadvertently climbed to 4400' before remembering that climb had been restr to 4000'. Pilot corrected to 4000'. Then controller assigned 6000'. Contributing factors: pilot was tired and very grouchy due to scheduling goof on part of company. Pilot had to drive all over town collecting freight, then load aircraft alone. This resulted in a bad attitude during initial phases of flight. Also, in single pilot operations, it is not good when a controller issues a restr altitude after giving clearance to cruise altitude because the pilot's mindset sometimes moves on to other things when cleared early to cruise altitude.

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Original NASA ASRS Text

Title: ATX SMT ALT DEVIATION OVERSHOT DURING CLIMBOUT FROM BFI.

Narrative: SINGLE PLT PART 135 CARGO FLT. CLBING OUT OF BFI, CTLR ASSIGNED 9000, THEN 11000, THEN 4000'. PLT INADVERTENTLY CLBED TO 4400' BEFORE REMEMBERING THAT CLB HAD BEEN RESTR TO 4000'. PLT CORRECTED TO 4000'. THEN CTLR ASSIGNED 6000'. CONTRIBUTING FACTORS: PLT WAS TIRED AND VERY GROUCHY DUE TO SCHEDULING GOOF ON PART OF COMPANY. PLT HAD TO DRIVE ALL OVER TOWN COLLECTING FREIGHT, THEN LOAD ACFT ALONE. THIS RESULTED IN A BAD ATTITUDE DURING INITIAL PHASES OF FLT. ALSO, IN SINGLE PLT OPS, IT IS NOT GOOD WHEN A CTLR ISSUES A RESTR ALT AFTER GIVING CLRNC TO CRUISE ALT BECAUSE THE PLT'S MINDSET SOMETIMES MOVES ON TO OTHER THINGS WHEN CLRED EARLY TO CRUISE 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.