A B737-800 flight crew reported crossing the ILS hold line while waiting for takeoff on runway 04 at...

Narrative:

Taxied out for takeoff on taxiway B to runway 4. Runway was being used for both takeoff and landing. There were at one time 8 airplanes lined up ahead of us. Weather was clear; VMC. We had just arrived and landed on this runway with a visual approach an hour before. The separation was tight between landing and departing aircraft. One of the airplanes ahead of us took too long to get established in takeoff position and the tower instructed them to clear the runway immediately to the left for landing traffic. We tried to keep close to the airplane in front of us in order to maintain a quick flow. As we approached the number one spot holding short; the tower advised us that we had passed the ILS hold short line. We were stopped at the runway hold short. A landing aircraft was approaching and the tower instructed us to cross the runway at aa and go the intersection of cy and turn around. As we crossed the runway; the approaching aircraft seeing us on the runway did a go-around. We crossed runway 4 as instructed and came back and now stopped at the ILS hold line on aa. Now the tower controller tells us there was no ILS hold line on aa. We are looking right at it. We are then told to proceed forward. After a few other takeoffs; we are cleared for takeoff from runway 4 with no further incident or confusion. We notice that now arrivals have been directed to the visual approach to 31.in my flying experience I have not been to an airport where an ILS hold line was used during VMC conditions. After the event the first officer and myself looked again at the airport diagram and at the ATIS. In the ATIS it does mention ILS hold line in use and on the airport diagram there is a caution with a box. We both missed that and frankly wouldn't have meant much to us under clear skies. There was no mention in the NOTAMS of this special circumstance at lga and it was not in our jepp notes. I realize now that it is for wingtip clearance for the landing aircraft. My suggestion would be for the controller to stress stopping at the ILS hold line. Additionally to mention clearly in the airport notes and on the 10-9 that this is for wingtip clearance and applies under all visibility conditions.

Original NASA ASRS Text

Title: A B737-800 flight crew reported crossing the ILS hold line while waiting for takeoff on Runway 04 at LGA. Crew was confused as conditions were VMC and ILS not in use. Crew later realized the ILS hold line is used for wingtip clearance for landing traffic.

Narrative: Taxied out for takeoff on taxiway B to RWY 4. RWY was being used for both takeoff and landing. There were at one time 8 airplanes lined up ahead of us. Weather was clear; VMC. We had just arrived and landed on this runway with a visual approach an hour before. The separation was tight between landing and departing aircraft. One of the airplanes ahead of us took too long to get established in takeoff position and the tower instructed them to clear the runway immediately to the left for landing traffic. We tried to keep close to the airplane in front of us in order to maintain a quick flow. As we approached the number one spot holding short; the tower advised us that we had passed the ILS HOLD SHORT LINE. We were stopped at the runway hold short. A landing aircraft was approaching and the tower instructed us to cross the runway at AA and go the intersection of CY and turn around. As we crossed the runway; the approaching aircraft seeing us on the runway did a go-around. We crossed RWY 4 as instructed and came back and now stopped at the ILS HOLD LINE on AA. Now the tower controller tells us there was no ILS HOLD LINE on AA. We are looking right at it. We are then told to proceed forward. After a few other takeoffs; we are cleared for takeoff from RWY 4 with no further incident or confusion. We notice that now arrivals have been directed to the visual approach to 31.In my flying experience I have not been to an airport where an ILS HOLD LINE was used during VMC conditions. After the event the FO and myself looked again at the airport diagram and at the ATIS. In the ATIS it does mention ILS HOLD LINE in use and on the airport diagram there is a caution with a box. We both missed that and frankly wouldn't have meant much to us under clear skies. There was no mention in the NOTAMS of this special circumstance at LGA and it was not in our Jepp notes. I realize now that it is for wingtip clearance for the landing aircraft. My suggestion would be for the controller to stress stopping at the ILS HOLD LINE. Additionally to mention clearly in the airport notes and on the 10-9 that this is for wingtip clearance and applies under all visibility conditions.

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.

Attributes
ACN	1350536
Time
Date	201604
Local Time Of Day	0601-1200
Place
Locale Reference	LGA.Airport
State Reference	NY
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy Ground Incursion Runway

A B737-800 flight crew reported crossing the ILS hold line while waiting for takeoff on runway 04 at lga. Crew was confused as conditions were VMC and ILS not in use. Crew later realized the ILS hold line is used for wingtip clearance for landing traffic.