1、Lessons Learned Entry: 0857Lesson Info:a71 Lesson Number: 0857a71 Lesson Date: 2000-02-07a71 Submitting Organization: ARCa71 Submitted by: Anthony BricenoSubject: SOFIA B747 Aircraft Towing Incident Description of Driving Event: The SOFIA B747 aircraft was being towed into the large maintenance nose
2、dock inside the 7500 hangar building at the Raytheon, Waco facility. As the aircraft approached the nose dock it made contact with the upper support structure of the nosedock. Labor and material costs were identified as less than $10,000. There were no personel injury associated with the incident. T
3、he damage is located at FS 480, stringer 2A, exterior top left side of fuselage. The exterior skin deformation is approximately 18“ in lenght and 14“ in width, with approximately .250 indentation of skin on either side of the frame. No fracturing of external skin is visible.The cause of this inciden
4、t was attributed to the following:1. Insufficient clearance between top of the aircraft and nosedock support structure.2. Lack of clear communication means between the aircraft/nosedock clearance observer and the tow task supervisor.3. Supervisor failure to ensure tow team members were pre-briefed o
5、n specific duties and resposnsibilities prior to performance of the task.4. Supervisor failure to properly plan aircraft tow operations prior to task performance.5. Supervisor failure to ensure tow team personnel possessed required support equipment (Not all task assigned personnel possessed alert w
6、histles/horns).Lesson(s) Learned: Supervisor must assure adequate resources in terms of equipment and safety briefing are performed prior to initiating aircraft tow activities.Recommendation(s): Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provide
7、 training to supervisor and tow operators on the importance of safety briefing and having adequate resources prior to performing towing activities.Evidence of Recurrence Control Effectiveness: Government representative performed audit of towing opeations to verify adequate corrective actions were im
8、plemented.Documents Related to Lesson: N/AMission Directorate(s): a71 Exploration Systemsa71 Aeronautics ResearchAdditional Key Phrase(s): a71 Aircrafta71 Ground Operationsa71 Ground Equipmenta71 HardwareAdditional Info: Approval Info: a71 Approval Date: 2000-06-5a71 Approval Name: Eric Raynora71 Approval Organization: QSa71 Approval Phone Number: 202-358-4738Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
