Aviation Insights by AEROTHRIVE的动态

"Analysis of the MV Dali container ship accident to the Baltimore Key Bridge" The container ship #MVDali, owned by Grace Ocean Pte Ltd. and registered in Singapore, collided with the Francis Scott #KeyBridge in #Baltimore Harbor on March 26, 2024, at 01:30 am. Most marine industry communities were informed. This caused almost 20 deaths from individuals falling into the flood and damaging the road infrastructure. It also triggered an emergency road replacement plan that could affect urban development in the near and long term. Thus, I will approach this issue from the standpoint of an experienced ship pilot who has navigated several vessels in various scenarios. Using the latest data, these insights will examine the ship's navigation route during the accident and probable human and environmental variables. Releasing fresh information may cause some of these comments to be retracted: 1.?In addition to available reports, the absence of accurate, dependable, and widely acknowledged information and reports regarding the cause of this collision, the failure to be prepared for emergencies during ship handling operations, and the absence of a contingency plan for ship handling were emphasized. 2. Another crucial aspect to consider is the importance of guiding the vessel proactively through the channel's potential midpoint. This strategic positioning is vital as it allows a quicker response to emergencies. In the case of MV Dali, such a maneuver could have averted the collision. 3.?Based on the available evidence's drifting route, the current pushed the vessel to the starboard side. In such a tidal stream or current, keeping the vessel closer to the forest left margin would have been advisable?to allow ample emergency response time. This strategic positioning could have averted the collision. 4.?As seen in the accident video and based on available info, the outage lasted only four minutes (01:25 am to 01:29 am), a few minutes before the bridge area was damaged, which is not long enough for ship maneuvering, and the operation was inaccurate. 5.?Given the 20–30 meter water depth, failing to deploy both anchors on time may have contributed; however, using the second anchor could help lessen propeller screwing effect during astern propulsion. 6.?The presence of two pilots on board the MV Dali underscores the complexity of the nautical operation and the heavy traffic in the area. However, the absence of standby assistant tugboats for large vessel handling operations until the operation's end highlights a significant resource gap. Despite the pilots' expertise, the lack of additional support in the form of tugboats may have exacerbated the situation, suggesting that the pilots' presence alone may not be sufficient in such scenarios. https://lnkd.in/dhC27ZTW https://lnkd.in/dVXTzfMd https://lnkd.in/dKYYAZ-8 #maritime#dali#baltimore#keybridge

As a seasoned navigator who has traversed under some of the world's most iconic bridges with large ships including Francis Scott Key bridge, I'd like to share my insights on the critical factors navigational officers must consider when passing under bridges: Clearance height: Ensure the vessel's height allows safe passage without risk of collision or damage to antennas and masts. Bridge clearance information: Refer to navigational charts and tables to determine available clearance, factoring in tidal variations. Current and tide: Assess strength and direction of currents and tides affecting clearance and maneuverability. Vessel draft: Ensure sufficient water depth for safe passage, especially in shallow waters or during low tide. Vessel speed: Adjust speed to maintain control and stability, adhering to speed regulations. Weather conditions: Account for wind strength and direction affecting handling and clearance. Navigation lights and signals: Display required lights and signals to indicate presence and intentions. Emergency procedures: Have contingency plans for unexpected situations like engine failure or loss of control. During my tenure as a Chief Officer, I distinctly recall the meticulous calculations involved in determining precise clearances, taking into account above mentioned factors. Sometimes, we traversed bridges with minimal available clearance, owing to the substantial dimensions of contemporary vessels and limited water depths beneath them. It was customary for me to undertake multiple calculations, often up to ten revisions, to ensure safe passage without collision. This aspect of maneuvering vessels in and out of ports is undeniably critical. The recent incident involving MV DALI underscores the importance of these considerations. A power failure leading to steering gear failure caused her to stray off course and collide with a bridge, resulting in a big tragedy. The crew's quick response, issuing a mayday signal, likely averted further disaster. Investigations are underway, but until then, my thoughts are with the lives lost and the devastated crew.

Inadequate Cold Weather Procedures Led to Dual Engine Failure On February 27, 2001, Loganair Flight 670A, a cargo service from Edinburgh to Belfast, experienced a dual engine failure and was forced to ditch in the Firth of Forth. The accident resulted in the loss of both crew members onboard the Short 360-100 aircraft. The aircraft, registered as G-BNMT, had taken off with 1,040 kilograms of cargo and 1,360 kilograms of fuel. The captain, aged 58, had 13,569 hours of flight experience, while the 29-year-old first officer had 438 flight hours. The flight proceeded normally until the co-pilot activated the anti-icing systems at 2,200 feet, which coincided with a rapid drop to zero on the torque indicators for both engines. With no propeller thrust, the crew declared a Mayday and initiated an emergency descent. Unable to reach the shore, they prepared for a water landing, which occurred with the aircraft impacting the water at an airspeed of 86 knots. The wreckage was discovered 65 meters offshore, partially submerged, and embedded in the sand. The empennage had separated and was found 100 meters from the main wreckage. The cockpit voice recorder and flight data recorder were recovered intact, allowing for a thorough investigation by the Air Accidents Investigation Branch (AAIB). The investigation revealed that the primary cause of the crash was the accumulation of snow in the engine air intakes. The aircraft had been parked at Edinburgh Airport for 17 hours in snow conditions with moderate to strong winds, which drove snow into the engine intakes. This snow was not removed because intake plugs were neither part of the onboard equipment nor readily available at the airport. Moreover, critical information regarding cold weather procedures from the manufacturer's maintenance manual was absent from the airline's operations manual. During takeoff, the snow altered the airflow in the intakes, leading to engine flameout when the anti-ice vanes were activated simultaneously. The AAIB noted that sequential activation of the anti-ice vanes might have prevented the dual engine failure. A similar incident involving a different Short 360 aircraft eight years earlier highlighted the risk of snow accumulation in sub-zero conditions, yet no effective procedural changes had been implemented. In response, the AAIB and Short Brothers issued several recommendations to enhance safety in cold weather operations. These included a Flight Operation Department Communication, an All Operator Message, and specific recommendations based on the investigation's findings to prevent similar occurrences in the future. Subscribe to our Aviation Safety Newsletter NOW and get the hot stuff free and without delay: https://lnkd.in/eGZqhPHR! My accident reviews are short summaries of publicly available accident reviews and reports and do not constitute any interpretation nor express my opinion or the opinion of any organization.

??????????????????????????????????????????????????????????????????????- Episode 26?? ??????????????????????????????????????????????????????? In July 2024, the Marine Accident Investigation Branch (MAIB) reported the grounding of the Channel Queen, a commercial swim event support vessel, off Alderney's coast. On the morning of the incident, the vessel veered off course due to the skipper's fatigue and inadequate use of navigation equipment. At approximately 04:23 am, Channel Queen struck submerged rocks, leading to a rapid influx of water. The crew abandoned ship and was rescued?without injury, but the vessel was declared a total loss. ?????? ????????????????: ? ???Human error contributes to 82% of maritime accidents, underscoring the critical need for advanced technological systems that can serve as?tireless co-pilots to?human operators. ? ???Current navigational equipment often operates in isolation, requiring constant human interpretation. This fragmentation highlights the necessity for a?system capable of analyzing data from multiple sources. ???Although data is available, it is often not accessible at the time of need. This?calls for a proactive system that presents potential hazards directly to the captain for immediate action, rather than requiring manual data interpretation. ???????? ????????. ?????? ?????? ??????????????. Credit: GOV.UK, Marine Accident Investigation Branch (MAIB) #WATCHIT #maritime #safety

Overpressurization Of Fuel System Led To Fire Aboard Towing Vessel (Case Study) Check out this article ?? #TowingVessel #FireAccident #FuelSystem #Shipping #Maritime #MarineInsight #Merchantnavy #Merchantmarine #MerchantnavyShips

It is true, there are redundant steering systems, that puff of black smoke was the emergency generator kicking on and power is shifted simultaneously through an ABT. Steering is controlled by electrohydraulic pumps. Ships crews frequently conduct exercises to train on shifting their steering control from primary to secondary just for these casualty situations. What is odd to me is the sudden hard starboard shift of the rudder to starboard, makes zero sense. Another oddity is that the ship was not flanked by tugs (who are in radio communication with the embarked pilot), this is standard protocol when approaching structures such as bridges. I have navigated on ships throughout harbors, channels and rivers around the world. There are standard practices that are international. No tugs, the unexplained rudder shift (especially when the ship is under restricted maneuvering procedures which is, once again standard when you are in restricted navigation waters such as harbors and rivers. The bridge at a minimum would have the Pilot, Master, Navigator, Helmsman/LeeHelmsman, Lookouts and likely the 1st and 2nd Mates on the bridge. The chief engineer would be in or near the engine room with emergency backup equipment in ready standby (part of the restricted maneuvering manning plan). Sure accidents happen, was this a perfect storm moment, perhaps, but I don’t think so. The extreme rudder angle shift to starboard under restricted maneuvering i at the precise worst and unrecoverable moment, lack of tugs… It stinks.

A Case Study of Over-pressurization of fuel system identified as the cause of the fire aboard a towing vessel. Check out this article ?? #MaritimeSafety #FuelSystem #Shipping #Maritime #MarineInsight #Merchantnavy #Merchantmarine #MerchantnavyShips

A Case Study of Overpressurization Of Fuel System Led To Fire Aboard Towing Vessel. Check out this article ?? #TowingVessel #FireAccident #MarineAccidents #Shipping #Maritime #MarineInsight #Merchantnavy #Merchantmarine #MerchantnavyShips

Key Bridge Disaster: So far we know little more than what was reported moments after the collision. Including the initial NTSB report. Looking at the Chart plot here; It seems the Ship made a 90° left turn straight towards Center Channel Marine Navigation (Green/Red) Marker Lights, on the Key Bridge, then releasing its tug boats from Transit Support Services to the Ship, while still in the harbor and approaching a major navigation landmark, that being the Key Bridge. Then a few seconds before collision ?? the Ship somehow made a minor course correction to the right (see chart plot) driving the ship almost square on the western Main Chanel Support. As is typical there were two Baltimore Harbor Pilots aboard, guiding the ship's exit from Baltimore. Conditions included light winds typical current and a relatively clear night with no nearby maritime traffic. Harbor Pilots are local to all ports like Baltimore. They are the local navigation experts, hired by commercial shippers & government entities, to safely pilot any Ship transiting their harbor. Far to fishy is this sad Maritime Disaster Story so far. There has to be more here than we are being told! .

#Tire_Burst_During_Landing. A tire burst during landing can have serious consequences for an aircraft, potentially leading to a variety of safety issues. Here are some of the potential consequences: 1. Loss of Control: A tire burst can lead to a loss of control during landing. The asymmetry in tire pressure can cause the aircraft to veer off the runway, especially if the burst occurs on one side. Pilots need to apply corrective measures to maintain directional control. 2-Runway Excursion: The loss of control can result in a runway excursion, where the aircraft departs the paved surface of the runway. This can lead to further damage to the aircraft and pose a risk to the occupants. 3-Structural Damage: The impact of a landing with a burst tire can transmit forces to the aircraft's structure. This may lead to structural damage, especially if the landing gear or other components are affected. 4. Fire Hazard: Friction generated by a landing with a burst tire can potentially lead to a fire, especially if the tire fragments or if there is a significant fuel leak. Fire is a serious concern in aviation incidents, and it can escalate the severity of the situation. 5. Evacuation and Emergency Response: In the event of a landing with a burst tire, there might be a need for an emergency evacuation. This can be challenging, and passengers and crew may need to quickly exit the aircraft, particularly if there is a fire or other imminent dangers. 6. Investigation: Regulatory authorities often conduct investigations into incidents involving tire bursts during landings. The goal is to determine the cause of the tire failure, assess the safety implications, and recommend preventive measures to avoid similar incidents in the future. It's important to note that modern aircraft are designed with multiple safety features and redundancies, and pilots are trained to handle various emergency situations, including tire bursts during landing. However, the severity of the consequences can vary depending on factors such as the type of aircraft, the runway conditions.