PA28 departs wrong runway at mlb.

Attributes
ACN	427700
Time
Date	199902
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mlb.airport
State Reference	FL
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	ground : takeoff roll
Route In Use	departure : vfr
Flight Plan	None
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : cfi pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 80 flight time total : 380 flight time type : 300
ASRS Report	427700
Person 2
Affiliation	other
Function	instruction : trainee
Qualification	pilot : student
Events
Anomaly	incursion : runway non adherence : clearance
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Intra Facility Coordination Failure

Narrative:

Tower cleared us for takeoff using the phrase 'cleared for takeoff' with no runway indication. We were holding short of the runway 22/runway 27L intersection and had been previously advised ('taxi to runway 22'), so we departed on runway 22. Tower informed us on upwind that we had been cleared for takeoff on runway 27L. The frequency was congested, and no traffic hazards resulted.

Original NASA ASRS Text

Title: PA28 DEPARTS WRONG RWY AT MLB.

Narrative: TWR CLRED US FOR TKOF USING THE PHRASE 'CLRED FOR TKOF' WITH NO RWY INDICATION. WE WERE HOLDING SHORT OF THE RWY 22/RWY 27L INTXN AND HAD BEEN PREVIOUSLY ADVISED ('TAXI TO RWY 22'), SO WE DEPARTED ON RWY 22. TWR INFORMED US ON UPWIND THAT WE HAD BEEN CLRED FOR TKOF ON RWY 27L. THE FREQ WAS CONGESTED, AND NO TFC HAZARDS RESULTED.

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.