Narrative:

Aircraft X has an open item. It states 'unknown substance throughout aircraft interior; ceiling panels; speaker cover; [and] cabin door area. Aircraft interior cleaning required...' it is my understanding that an unknown substance must be identified before we could fly the aircraft. [Company] is flying a plane in violation of the [company manual].

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Original NASA ASRS Text

Title: Mechanic reported a Widebody aircraft has an open item stating unknown substance throughout the passenger cabin surfaces.

Narrative: Aircraft X has an open item. It states 'unknown substance throughout aircraft interior; ceiling panels; speaker cover; [and] cabin door area. Aircraft interior cleaning required...' It is my understanding that an unknown substance must be identified before we could fly the aircraft. [Company] is flying a plane in violation of the [Company Manual].

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.