Narrative:

At iad taxi from cargo ramp. Instructions were to taxi to runway 30 via txwys Z, D, Y. Told to hold short of runway 12/30 at taxiway Y. There's a runway 1L 'approach' sign with markings. NOTAMS calls them non-standard. There's a runway 30-12 sign 'hold line.' both are on taxiway Y. We were cleared into position and hold on runway 30 at taxiway Y. A regional jet (I believe) was landing on runway 1L. We hedged the taxi a bit but it seems that we were pretty close to being underneath his flight path on approach. Recommendations: don't allow departures at taxiway Y (runway 30) and clear up NOTAMS as to what 'non-standard' markings means (ie, specify).

Related reports:

Google
 

Original NASA ASRS Text

Title: FLT CREW OF A300, CLRED INTO POS AND HOLD RWY 30 AT Y INTXN, FEEL THEY WERE A HAZARD TO ACFT LNDG ON RWY 1L AT IAD.

Narrative: AT IAD TAXI FROM CARGO RAMP. INSTRUCTIONS WERE TO TAXI TO RWY 30 VIA TXWYS Z, D, Y. TOLD TO HOLD SHORT OF RWY 12/30 AT TXWY Y. THERE'S A RWY 1L 'APCH' SIGN WITH MARKINGS. NOTAMS CALLS THEM NON-STANDARD. THERE'S A RWY 30-12 SIGN 'HOLD LINE.' BOTH ARE ON TXWY Y. WE WERE CLRED INTO POS AND HOLD ON RWY 30 AT TXWY Y. A REGIONAL JET (I BELIEVE) WAS LNDG ON RWY 1L. WE HEDGED THE TAXI A BIT BUT IT SEEMS THAT WE WERE PRETTY CLOSE TO BEING UNDERNEATH HIS FLT PATH ON APCH. RECOMMENDATIONS: DON'T ALLOW DEPS AT TXWY Y (RWY 30) AND CLR UP NOTAMS AS TO WHAT 'NON-STANDARD' MARKINGS MEANS (IE, SPECIFY).

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.