<< >> NASA ASRS Report 1125487, October 2013

A pit departure controller and the two HS125 pilots involved describe a TCAS RA event that begins when the initial clearance altitude is misheard and not corrected on read back. On initial contact with the departure controller the incorrect assigned altitude is stated and again not corrected and the RA ensues.

Attributes
ACN	1125487
Time
Date	201310
Local Time Of Day	0001-0600
Place
Locale Reference	PIT.TRACON
State Reference	PA
Aircraft 1
Make Model Name	Hawker Horizon (Raytheon)
Operating Under FAR Part	Part 135
Flight Phase	Climb
Route In Use	Vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	Descent
Route In Use	Vectors
Flight Plan	IFR
Person 1
Function	Departure
Qualification	Air Traffic Control Fully Certified
Person 2
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 82 Flight Crew Total 5100 Flight Crew Type 2480
Events
Anomaly	ATC Issue All Types Deviation - Altitude Overshoot Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance

Narrative:

I was working departure south when agc tower called for a release on a HS125; I issued a 030 heading and released (we normally issue a 070 for aircraft off agc for ton VOR) but due to traffic inbound from the north for agc the 030 heading was issued. Agc tower has a tendency to take a long time to actually release the airplanes. An A320 was still outside our airspace to the southeast when I did this. When the pilot of the HS125 checked in I did not hear him say he was climbing to five thousand and I turned him right to get him on course and called traffic just east of agc airport northwest bound descending to four thousand. Yes; I did miss the altitude; but if he would have been released in a timely manner it may not have been an issue. Agc tower has to do a better job on releases.

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Original NASA ASRS Text

Title: A PIT Departure Controller and the two HS125 pilots involved describe a TCAS RA event that begins when the initial clearance altitude is misheard and not corrected on read back. On initial contact with the Departure Controller the incorrect assigned altitude is stated and again not corrected and the RA ensues.

Narrative: I was working Departure South when AGC Tower called for a release on a HS125; I issued a 030 heading and released (we normally issue a 070 for aircraft off AGC for TON VOR) but due to traffic inbound from the north for AGC the 030 heading was issued. AGC Tower has a tendency to take a long time to actually release the airplanes. An A320 was still outside our airspace to the southeast when I did this. When the pilot of the HS125 checked in I did not hear him say he was climbing to five thousand and I turned him right to get him on course and called traffic just east of AGC airport northwest bound descending to four thousand. Yes; I did miss the altitude; but if he would have been released in a timely manner it may not have been an issue. AGC Tower has to do a better job on releases.

Data retrieved from NASA's ASRS site as of July 2013 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.