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NASA-LLIS-0006
Lessons Learned - Orbiter Exterior Panel Separation During Flight due to Incorrect Installation (Washers not Provided Under Fasteners)
Year: 1991
Abstract: Description of Driving Event:
Following the shuttle mission STS-27, the right side orbital maneuvering system (OMS) pod carrier panel on the orbiter OV-104 was missing. It was concluded that the panel was installed incorrectly. Six flat washers were not installed under the mounting fasteners. This caused damage to the base panel material upon installation. The panel became loose during flight, produced a gap, and was pulled off by the air flow. No additional damage was sustained by the orbiter thermal protection system or other orbiter components. The panel installation procedures did not clearly identify the requirement for the washers. The procedures were revised to include the steps for installing the washers. Approximately 100 orbiter panels of similar configuration were recommended for inspection to assure this anomaly was not present elsewhere within the orbiter fleet.
Following the shuttle mission STS-27, the right side orbital maneuvering system (OMS) pod carrier panel on the orbiter OV-104 was missing. It was concluded that the panel was installed incorrectly. Six flat washers were not installed under the mounting fasteners. This caused damage to the base panel material upon installation. The panel became loose during flight, produced a gap, and was pulled off by the air flow. No additional damage was sustained by the orbiter thermal protection system or other orbiter components. The panel installation procedures did not clearly identify the requirement for the washers. The procedures were revised to include the steps for installing the washers. Approximately 100 orbiter panels of similar configuration were recommended for inspection to assure this anomaly was not present elsewhere within the orbiter fleet.
Subject: Configuration Management
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:48:24Z | |
| date available | 2017-09-04T15:48:24Z | |
| date copyright | 04/29/1991 | |
| date issued | 1991 | |
| identifier other | QAYCQCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/51305 | |
| description abstract | Description of Driving Event: Following the shuttle mission STS-27, the right side orbital maneuvering system (OMS) pod carrier panel on the orbiter OV-104 was missing. It was concluded that the panel was installed incorrectly. Six flat washers were not installed under the mounting fasteners. This caused damage to the base panel material upon installation. The panel became loose during flight, produced a gap, and was pulled off by the air flow. No additional damage was sustained by the orbiter thermal protection system or other orbiter components. The panel installation procedures did not clearly identify the requirement for the washers. The procedures were revised to include the steps for installing the washers. Approximately 100 orbiter panels of similar configuration were recommended for inspection to assure this anomaly was not present elsewhere within the orbiter fleet. | |
| language | English | |
| title | NASA-LLIS-0006 | num |
| title | Lessons Learned - Orbiter Exterior Panel Separation During Flight due to Incorrect Installation (Washers not Provided Under Fasteners) | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1991 | |
| contenttype | fulltext | |
| subject keywords | Configuration Management | |
| subject keywords | Flight Equipment | |
| subject keywords | Flight Operations | |
| subject keywords | Hardware |