Phl controllers and pilot of holding aircraft report of an almost runway incursion caused by the dev...

Attributes
ACN	1223177
Time
Date	201412
Local Time Of Day	0001-0600
Place
Locale Reference	PHL.Airport
State Reference	PA
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Medium Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Taxi Takeoff
Route In Use	None
Flight Plan	IFR
Aircraft 2
Make Model Name	Widebody Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Route In Use	None
Flight Plan	IFR
Person 1
Function	Local Instructor
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 1.5
Person 2
Function	First Officer
Qualification	Flight Crew Commercial
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Less Severe Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Ground Incursion Runway

Narrative:

In this event; my role was the monitor of a developmental on the local east position. The trainee issued a clearance for an aircraft (aircraft X) to cross the active departure runway with another aircraft holding in position (aircraft Y). After 20 or so seconds the aircraft X had not started his taxi across the runway and it was wrongly assumed that the aircraft (aircraft X) still holding short of the runway was another arrival aircraft instructed by the local west controller to hold short of runway 9L. The trainee proceeded to clear aircraft Y for takeoff while aircraft X had not yet begun his taxi across the runway. The pilot of aircraft X heard the departure clearance and proceeded to hold short of the runway. About 30 seconds after the departure clearance was issued; aircraft X checked on the frequency stating that he was still holding short of the runway and I reiterated for the pilot to do so.there are no procedural recommendations for this event. It was my responsibility as a trainer to monitor the trainees every transmission and ensure all rules are being adhered to. I failed to realize that the trainee issued a departure clearance while another aircraft had not yet cleared the runway after being given a clearance to cross. I must and will ensure that this situation never happens again.

Original NASA ASRS Text

Title: PHL Controllers and pilot of holding aircraft report of an almost runway incursion caused by the Developmental crossing an aircraft; then clearing an aircraft for takeoff. The crossing aircraft held its position and did not enter the runway.

Narrative: In this event; my role was the monitor of a developmental on the Local East position. The trainee issued a clearance for an aircraft (Aircraft X) to cross the active departure runway with another aircraft holding in position (Aircraft Y). After 20 or so seconds the Aircraft X had not started his taxi across the runway and it was wrongly assumed that the aircraft (Aircraft X) still holding short of the runway was another arrival aircraft instructed by the local west controller to hold short of runway 9L. The trainee proceeded to clear Aircraft Y for takeoff while Aircraft X had not yet begun his taxi across the runway. The pilot of Aircraft X heard the departure clearance and proceeded to hold short of the runway. About 30 seconds after the departure clearance was issued; Aircraft X checked on the frequency stating that he was still holding short of the runway and I reiterated for the pilot to do so.There are no procedural recommendations for this event. It was my responsibility as a trainer to monitor the trainees every transmission and ensure all rules are being adhered to. I failed to realize that the trainee issued a departure clearance while another aircraft had not yet cleared the runway after being given a clearance to cross. I must and will ensure that this situation never happens again.

Data retrieved from NASA's ASRS site 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.

Phl controllers and pilot of holding aircraft report of an almost runway incursion caused by the developmental crossing an aircraft; then clearing an aircraft for takeoff. The crossing aircraft held its position and did not enter the runway.