NFPA 409 . A project for a hangar Group I service center with 262,000 sq ft and 40 ft high; with foam water deluge and linear heat detector under the roof . They are not providing supplementary fire protection beneath the wings of airplanes and not automatic detection; only manual pull stations. Hangar will have airplanes with wing area greater than 3,000 sq ft.
Are any changes in the codes that allows only manual activation?
Thank you in advance for your help.