A Lufthansa Airbus A321-200, registration D-AIRO performing flight LH-1989 from Cologne to Munich (Germany) with 200 passengers and 6 crew, was preparing for the flight. When the crew boarded the aircraft flight crew as well as cabin crew noticed an abnormal odour on board, which was described rancid to sourly, the odour however appeared to dissipate. Maintenance was called but did not notice the odour, the aircraft was dispatched. After departure the odour intensified and was now described chemical, passengers began to complain about the odour. The aircraft continued to Munich for a safe landing. The crew went to a hospital for check ups.
The occurrence aircraft remained on the ground in Munich for 42 hours before returning to service.
According to information The Aviation Herald received at least one of the flight attendants was diagnosed with unusual lung vesicular sounds, a disturbance of lung diffusion with substantially decreased transfer factor of the lung for carbon monoxide and cognitive impairment.
On Jun 25th 2018 Germany’s BFU reported they have been informed about the occurrence and are collecting further information to decide about the classification of the occurrence. source: Aviation Herald