Aviation Herald report:
Accident: Aeromexico Connect E190 at Durango on Jul 31st 2018, veered off and overran runway after rejected takeoff and burst into flames
MMDO 312150Z 12007KT 10SM BKN020CB BKN025 OVC200 22/14 A3023 RMK 8/903 BINOVC=
MMDO 312103Z RTD 28007KT 7SM OVC015CB 17/14 A3024 RMK SLP118 57014 956 8/9// PISTA CERRADA POR ACFT ACCIDENTADA BINOVC=
MMDO 312018Z 07003KT 7SM TSRA BKN020CB 20/13 A3023 RMK 8/900 TSRAB13=
MMDO 311941Z 01005KT 10SM BKN025CB 28/10 A3023 RMK 8/300=
MMDO 311844Z 12003KT 12SM BKN025TCU BKN200 26/11 A3026 RMK 8/201 ISOL CB=
Airport elev. 6102 ft/1860m. Calculated DA (mine, from METAR above) 7934ft/2418m
AH map shows
both engines found off left side of runway, between RWY and TWY A, and between TWY A hold point and twy B.
My observation (from misc airport photos) is that there appears to be a full-length drainage ditch between runway left side and the parallel taxiway A, in about the lateral location where the engines were found. Rest of aircraft travelled about 250 m/yds past the point the engines were found. Time between the aircraft comes to a stop, and fire ignition, about 3-4 minutes, thus the moderatel casualties.
It appears to me the drainage area is a swale or valley (shallow but not flat - close order of 1.5 m/yds deep?), with the taxiways crossing it on berms to access the runways - just an impression from the look of the ground around the taxiways (google earth) and how far the ditch "tunnels" past the tawiways.
https://www.google.com/maps/place/Ae...4d-104.5338168
My
speculation - aircraft departs left side of runway under asymmetric thrust after engine failure, descends into swale, travels along concrete-lined ditch, loses one engine in rough ground, hits berm for TWY A hold position, lose second engine (and perhaps gear) to ground obstruction (berm), slides across TWY A hold point and along concrete ditch lining on belly, until stopping.
Weight (97 seats out of 100 filled), density altitude and minimal wind may explain high true/ground speed required and achieved. Someone with EMB-190 references may be able to figure that out.
Shades of Continental 1404 runway excursion and loss of gear and one engine in rought ground DEN Dec. 2008, and SWA fall into ditch off taxiway at Nashville Dec. 2015.
EDIT - Airbubba added his excellent photo while I was posting. Obviously better info about final aircraft position. Confirms hold point for 21 could have been an obstruction if they got into the weeds - emphasize "could", not "did." That's a nasty ditch. I
think I see an S-curved trace through the grass from the top of the image to the taxiway, but that could be "confirmation bias."