What happened
On 2 December 2011, an Emirates Boeing 777-30 and registration A6-EMR was landing at Ibrahim Nasir International Airport (MLE) in the Maldives. While the flight crew initially experienced a normal approach and touchdown, the aircraft encountered significant issues during the landing rollout. As the aircraft traveled down the runway, several tires on the left main landing gear sustained damage, including ruptures and flat spots. Simultaneously, metal junction boxes attached to the landing gear became detached from the aircraft and were left on the runway.
The investigation
An investigation by the UAE GCAA AAIS examined the aircraft's maintenance records, the condition of the tires, and the physical damage to the landing gear components. The investigation analyzed the runway surface at MLE and the meteorological conditions present during the landing. Investigators also reviewed the manufacturer's reports regarding the tire failures and the structural integrity of the junction box attachment straps. The study included an analysis of the junction box damage, which revealed ductile failures rather than fatigue-related issues.
Findings
- The runway surface at MLE had deteriorated, creating specific areas prone to pooling water.
- Although rain had been falling prior to the landing, Air Traffic Control (ATC) reported the runway as merely "wet," without notifying the crew of significant standing water.
- The standing water on the runway was the primary factor, as the force of the water splashing against the landing gear caused the junction box band clamps to overload and fail.
- The damage to the tires was determined to be caused by external factors related to the runway conditions rather than any manufacturing or maintenance defects.
Safety action
Following the incident, the aircraft manufacturer initiated a design review to strengthen the metal straps used to secure junction boxes. The airport operator implemented a runway repair program and established new procedures for monitoring and clearing standing water. Additionally, the GCAA has worked to ensure that UAE-based operators are aware of the specific risks associated with landing at MLE during heavy rain.