| Recurring |
unknown |
The articles do not mention any software failure incident happening again at the same organization or at multiple organizations. Therefore, the information related to the software failure incident in the provided articles does not address either of the options provided in the question. |
| Phase (Design/Operation) |
unknown |
(a) The software failure incident related to the design phase: The incident with Sierra Nevada Corporation's Dream Chaser prototype spacecraft was not related to software. The left landing gear failure was attributed to a mechanical failure, specifically the landing gear not deploying properly, which was not software-related [22062].
(b) The software failure incident related to the operation phase: The landing gear deployment issue that caused the Dream Chaser to veer off the runway and be damaged during rollout was not attributed to software. It was described as a mechanical failure, not a software-related problem [22062]. |
| Boundary (Internal/External) |
within_system |
(a) within_system: The software failure incident related to the Dream Chaser's left landing gear not deploying was determined to be a mechanical failure and not software-related. Sierra Nevada stated that the deployment issue was a mechanical failure, not software-related, and was not expected to be a serious setback for the project [22062]. This indicates that the failure originated from within the system, specifically a mechanical aspect of the landing gear mechanism. |
| Nature (Human/Non-human) |
non-human_actions |
(a) The software failure incident in the reported Dream Chaser flight was not related to non-human actions. The article mentions that the left landing gear did not deploy properly, leading to the spacecraft veering off the runway and being damaged during the rollout. This issue was identified as a mechanical failure and not software-related [22062].
(b) The software failure incident in the Dream Chaser flight was not attributed to human actions. The article states that the deployment issue with the left landing gear was a mechanical failure and not software-related. It was also mentioned that the final version of the landing gear was planned to use a different design, indicating that the issue was not caused by human error [22062]. |
| Dimension (Hardware/Software) |
hardware |
(a) The software failure incident occurring due to hardware:
The incident with Sierra Nevada Corporation's Dream Chaser prototype spacecraft was related to the left landing gear failing to deploy properly, causing damage during the rollout. The article mentions that the landing gear on the prototype was borrowed from a fighter jet, but the final version was planned to use a different design, indicating a hardware-related issue [22062].
(b) The software failure incident occurring due to software:
The article explicitly states that the deployment issue with the left landing gear on the Dream Chaser prototype was a mechanical failure and was not software-related. Therefore, the software failure incident in this case did not originate from software issues [22062]. |
| Objective (Malicious/Non-malicious) |
non-malicious |
The software failure incident related to the Dream Chaser's left landing gear not deploying during its first free flight was determined to be a mechanical failure and not software-related. The incident was described as a "small glitch" at the end of an otherwise successful flight [22062]. Therefore, the objective of the software failure incident was non-malicious, as it was not caused by any malicious intent but rather by a mechanical issue. |
| Intent (Poor/Accidental Decisions) |
unknown |
The articles do not mention any software failure incident related to poor_decisions or accidental_decisions. Therefore, the intent of the software failure incident in this case is unknown. |
| Capability (Incompetence/Accidental) |
accidental |
(a) The software failure incident does not seem to be related to development incompetence. The article mentions that the landing gear deployment issue was a mechanical failure and was not software-related [22062].
(b) The software failure incident appears to be accidental. The article states that the left landing gear did not deploy properly, causing the Dream Chaser to veer off the runway and get damaged during the rollout. This issue was described as a small glitch at the end of an otherwise successful flight, indicating an accidental nature of the failure [22062]. |
| Duration |
unknown |
The articles do not mention any software failure incident related to the Dream Chaser's left landing gear failure. Therefore, the duration of the software failure incident is unknown. |
| Behaviour |
other |
(a) crash: The incident mentioned in the article does not involve a crash of the software system. The failure was related to the left landing gear of the Dream Chaser spacecraft not deploying properly, leading to damage during the rollout [22062].
(b) omission: The software failure incident described in the article does not involve the system omitting to perform its intended functions at an instance(s). The issue was specifically related to the left landing gear not deploying properly, resulting in damage to the spacecraft [22062].
(c) timing: The software failure incident did not occur due to the system performing its intended functions correctly but too late or too early. The issue with the left landing gear deployment was a mechanical failure and not related to timing issues [22062].
(d) value: The software failure incident was not caused by the system performing its intended functions incorrectly. The issue with the left landing gear deployment was a mechanical failure and not attributed to incorrect software behavior [22062].
(e) byzantine: The software failure incident did not involve the system behaving erroneously with inconsistent responses and interactions. The issue with the left landing gear deployment was identified as a mechanical failure and not related to inconsistent software behavior [22062].
(f) other: The behavior of the software failure incident was related to a mechanical failure in the deployment of the left landing gear of the Dream Chaser spacecraft. The incident was not attributed to software-related issues but rather to a glitch in the landing gear mechanism [22062]. |