Who is Liable if a Semi-Truck's Landing Gear Collapses While Driving and Drops a Loaded Trailer?
The "landing gear" on a commercial semi-trailer consists of the heavy steel legs that crank down to support the front of the trailer when it is unhooked from the tractor. When a driver hooks up to a trailer, one of their most critical jobs is to manually crank these heavy legs all the way up and securely lock the handle in place before hitting the highway. If a driver is rushed, exhausted, or simply negligent, they may only crank the legs up halfway, or they may fail to engage the locking mechanism. As the truck bounces down the interstate at 70 mph, the heavy steel legs begin to slowly vibrate downward. When the landing gear eventually drops and strikes the rushing asphalt, the sheer force acts like a massive steel anchor. The impact can violently rip the trailer right off the truck's fifth wheel, dropping 40,000 pounds of freight onto the highway and sparking a catastrophic multi-vehicle pileup.
When a dropped trailer causes a massive highway disaster, the trucking company will desperately try to frame the incident as a sudden and unforeseeable "mechanical failure." They will claim the gears stripped out or the locking pin broke. However, landing gear assemblies are over-engineered pieces of solid steel; they do not fail on their own. Determining who is liable if a semi-truck's landing gear collapses while driving and drops a loaded trailer requires proving that the driver bypassed fundamental Federal Motor Carrier Safety Regulations (FMCSR) during their pre-trip inspection.
FMCSR Part 392.7 strictly forbids a driver from operating a commercial motor vehicle unless they are satisfied that all parts and accessories, specifically including the coupling devices and landing gear, are in good working order. The CDL manual mandates that drivers must visually confirm the landing gear is fully raised, the crank handle is secured in its bracket, and there is adequate clearance between the landing gear and the ground before moving the vehicle.
Exposing Negligence and Maintenance Failures
To hold the motor carrier fully liable, an aggressive plaintiff's attorney will deploy mechanical experts to investigate exactly why the legs struck the ground:
Cranking up a fully loaded trailer by hand is exhausting, especially in the rain or snow. If post-crash analysis reveals the gears inside the legs are intact and undamaged, it proves there was no mechanical failure. The driver simply got tired, cranked the legs up just high enough to clear the yard, and failed to lock the handle. This is pure driver negligence.
If the gears *were* stripped, the focus shifts to the company's maintenance shop. Landing gear must be regularly greased and inspected. If maintenance logs show drivers had been writing up complaints ("squawks") about a bent crank handle or slipping gears on that specific trailer for weeks, and the company ignored the repairs to keep the freight moving, the corporation is directly liable.
Every driver must sign a Daily Vehicle Inspection Report (DVIR). If the landing gear fell down an hour into the trip, but the driver signed a federal document claiming the gear was perfectly secured and functioning, they have falsified federal records, significantly strengthening the plaintiff's case.
Preserving the Mangled Steel
The trucking company will immediately attempt to cut off the broken landing gear and scrap it to hide the evidence of stripped gears or unlocked handles. Victims must act urgently to legally impound the trailer.