And what country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. The remedy is to set them right as to facts, pardon and pacify them. What signify a few lives lost in a century or two? The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
Very heavy airplane; astronomically high ground pressure; pilot is not on the center line of the taxiway that is stressed for this. His left undercarriage is off the tarmac and crushed the poor service road.
Ask the civil engineer about bed preparation. The airport may have originally been built for smaller aircraft, then expanded. But if you don't prepare the roadbed (materials, compaction, drainage, anticipated load design), the road will not last. This looks like it might be a drainage issue, since it's been patched before.
The double yellow lines and yellow hash marks denote non-load bearing pavement.....every pilot knows this....appears the pilot was distracted and forgot to follow the radius leading to the runway....pilot error all the way....
Didn't know that, (thanks) but.... isn't there another set of double lines in the picture, on starboard side, where the guy is standing? It looks like a very narrow taxiway to me, and although it's hard to tell definitively, it looks like his starboard side wheels are just on the edge there too (they're just out of the picture, RH side).
The line you see the gentleman standing by is actually the taxiway centerline. It is normal to use “judgemental oversteer” in the corners. The airport paints the centerline of the taxiway in the center and I’m supposed to know the geometry of my aircraft well enough to drive by the corner and not drop the INBOARD wheel off. The taxiway is concrete the side filet is asphalt. It’s only there to facilitate some light vehicle traffic or its greater purpose which is keeping the ingestion of foreign debris out of the overhanging wing mounted engines of larger aircraft like this one. I’ve seen guys do this in front of me without this consequence of being so far off the concrete, seems they believe they’re driving a tractor trailer and feel the need to swing wide and meet the runway hold short at 90 degrees…why I don’t know. This pic definitely gives you the reason it’s a bad idea. The MD-10/11 can tip the scales at or above 600k lbs, not a regular occurrence but 400k isn’t unusual.
Looks like a Boeing 767-300F aircraft with a Max TakeOff Weight (MTOW) of 412,000lbs. Approx 90% of the weight is on the mainwheels so those four tires are supporting up to 180,000lbs. By comparison a transport truck has a maximum weight of 82,000lbs supported by 18 or 22 wheels. The heaviest vehicle the access road is made to support is a snow-plow or Crash-Fire-Rescue truck. Pilot error or nose wheel steering failure is to blame. Jack the wing, slide a THICK steel plate under and in front of the wheels, and tow it back onto the concrete taxiway and then to the hangar for a special inspection of the gear, wheels and brakes and run a diagnostic check on the steering. If I were signing it out I would want to change the wheels and brakes and send them to the overhaul shop. Al_in_Ottawa
I was on a Southwest 737 landing at ONT when the pilot decided to make a shortcut across a grass median at about 9:30 PM. I had visions of walking in the door at about midnight. To my surprise, the ground crew had us at the gate in about 10 minutes.
One time I had to jack a Gulfstream G4 that was parked on asphalt and just sank right into the ramp on a hot day. Had to put steel plates under the MLG tires to tow it out of there. I guess old Joe Patroni would have just fired it up and taxied it out! (extra points if you get the reference)
Very heavy airplane; astronomically high ground pressure; pilot is not on the center line of the taxiway that is stressed for this. His left undercarriage is off the tarmac and crushed the poor service road.
ReplyDeleteInch or two of asphalt isn't going to hold 200,000+ lbs of airplane. (MD-10/11?)
ReplyDeleteApparently, he missed the 'soft shoulder' sign.
ReplyDeleteAsk the civil engineer about bed preparation. The airport may have originally been built for smaller aircraft, then expanded. But if you don't prepare the roadbed (materials, compaction, drainage, anticipated load design), the road will not last. This looks like it might be a drainage issue, since it's been patched before.
ReplyDeleteHe's off the load bearing concrete runway and on the paved utility cut for the runway marker lights that you can see in front of his tires.
DeleteThe double yellow lines and yellow hash marks denote non-load bearing pavement.....every pilot knows this....appears the pilot was distracted and forgot to follow the radius leading to the runway....pilot error all the way....
ReplyDeleteDidn't know that, (thanks) but.... isn't there another set of double lines in the picture, on starboard side, where the guy is standing? It looks like a very narrow taxiway to me, and although it's hard to tell definitively, it looks like his starboard side wheels are just on the edge there too (they're just out of the picture, RH side).
DeleteThe line you see the gentleman standing by is actually the taxiway centerline. It is normal to use “judgemental oversteer” in the corners. The airport paints the centerline of the taxiway in the center and I’m supposed to know the geometry of my aircraft well enough to drive by the corner and not drop the INBOARD wheel off. The taxiway is concrete the side filet is asphalt. It’s only there to facilitate some light vehicle traffic or its greater purpose which is keeping the ingestion of foreign debris out of the overhanging wing mounted engines of larger aircraft like this one. I’ve seen guys do this in front of me without this consequence of being so far off the concrete, seems they believe they’re driving a tractor trailer and feel the need to swing wide and meet the runway hold short at 90 degrees…why I don’t know. This pic definitely gives you the reason it’s a bad idea. The MD-10/11 can tip the scales at or above 600k lbs, not a regular occurrence but 400k isn’t unusual.
DeleteLooks like a Boeing 767-300F aircraft with a Max TakeOff Weight (MTOW) of 412,000lbs. Approx 90% of the weight is on the mainwheels so those four tires are supporting up to 180,000lbs. By comparison a transport truck has a maximum weight of 82,000lbs supported by 18 or 22 wheels. The heaviest vehicle the access road is made to support is a snow-plow or Crash-Fire-Rescue truck. Pilot error or nose wheel steering failure is to blame.
ReplyDeleteJack the wing, slide a THICK steel plate under and in front of the wheels, and tow it back onto the concrete taxiway and then to the hangar for a special inspection of the gear, wheels and brakes and run a diagnostic check on the steering. If I were signing it out I would want to change the wheels and brakes and send them to the overhaul shop.
Al_in_Ottawa
More likely a MD 10 or 11. 767’s do not have a center landing gear.
DeleteDie-versity hire, for equity, inclusion and vibrancy.
ReplyDeleteLizzy and Jerry Nadler were on a date?
ReplyDeleteI was on a Southwest 737 landing at ONT when the pilot decided to make a shortcut across a grass median at about 9:30 PM. I had visions of walking in the door at about midnight. To my surprise, the ground crew had us at the gate in about 10 minutes.
ReplyDeleteProbably had studded snow tires on that side by mistake.
ReplyDeleteFed Ex will get the bill for fixing that faux pas... Wonder if they will pass it on to the pilot who effed up while taxiing the plane.
ReplyDeleteNow you know why your package was delayed.
ReplyDeleteBest comment of the lot.
DeleteOne time I had to jack a Gulfstream G4 that was parked on asphalt and just sank right into the ramp on a hot day. Had to put steel plates under the MLG tires to tow it out of there. I guess old Joe Patroni would have just fired it up and taxied it out! (extra points if you get the reference)
ReplyDelete