[1][a] The aircraft was a de Havilland Hercules three-engined biplane, registered in the United Kingdom as G-EBMZ and delivered new to Imperial Airways in 1927.

The City of Jerusalem was carrying mail from the United Kingdom to India.

[1] While attempting a night landing at Jask the pilot misjudged the aircraft's altitude and it stalled and crashed.

[2] Flares were fitted to the wingtips and had been ignited to provide illumination for the night landing.

[3] The investigation was carried out by the Government of India and the British Air Ministry; the conclusion was that additional precautions were to be adopted, but noted that wing-mounted flares were still regarded as a satisfactory form of emergency landing aid.