AM Safety Procedures & PPE 3 — Questions and Answers
Question 1: Which label color on a Safety Data Sheet (SDS) hazard diamond indicates a health hazard?
- Red
- Yellow
- White
- Blue (Correct answer)
Correct answer: Blue
In the NFPA 704 hazard diamond, the blue (left) quadrant represents health hazards rated 0–4.
Question 2: What is the correct action if a technician's clothing becomes saturated with Skydrol hydraulic fluid?
- Continue working and remove the clothing at the end of the shift
- Remove contaminated clothing immediately and flush affected skin with water for 15 minutes (Correct answer)
- Wipe off excess fluid with a dry rag and apply protective cream
- Report it to the supervisor only, as Skydrol is non-toxic
Correct answer: Remove contaminated clothing immediately and flush affected skin with water for 15 minutes
Skydrol is a skin and eye irritant; contaminated clothing must be removed immediately and skin flushed thoroughly to prevent chemical burns.
Question 3: When using a safety harness for work at height on an aircraft, the anchor point must be rated for at least how many pounds?
- 1,000 lbs
- 2,500 lbs
- 5,000 lbs (Correct answer)
- 10,000 lbs
Correct answer: 5,000 lbs
OSHA 29 CFR 1910.140 requires personal fall arrest anchor points capable of supporting at least 5,000 lbs per attached worker.
Question 4: Which noise level triggers the mandatory use of hearing protection under OSHA general industry standards?
- 75 dB(A) for any duration
- 85 dB(A) over an 8-hour TWA (Correct answer)
- 90 dB(A) for less than 1 hour
- 95 dB(A) peak impulse noise
Correct answer: 85 dB(A) over an 8-hour TWA
OSHA's Hearing Conservation Amendment requires hearing protection when the 8-hour time-weighted average (TWA) reaches or exceeds 85 dB(A).
Question 5: What type of glove is recommended when handling aviation fuel (Jet-A)?
- Latex examination gloves
- Nitrile or neoprene chemical-resistant gloves (Correct answer)
- Cotton work gloves
- Leather welding gloves
Correct answer: Nitrile or neoprene chemical-resistant gloves
Nitrile or neoprene gloves provide adequate chemical resistance to petroleum-based fuels, unlike latex which degrades rapidly.
Question 6: A 'hot work permit' is required before performing which of the following tasks on an aircraft?
- Replacing a cabin air filter
- Riveting aluminum panels
- Welding or grinding near fuel tanks (Correct answer)
- Changing engine oil
Correct answer: Welding or grinding near fuel tanks
Hot work permits control ignition sources—welding, cutting, or grinding—in areas where flammable vapors (fuel tanks) could be present.
Question 7: What is the correct sequence for donning and doffing (removing) PPE to prevent self-contamination?
- Don gloves last; doff gloves first (Correct answer)
- Don gloves first; doff gloves last
- The order does not matter if each item is clean
- Gloves are donned and doffed simultaneously with other PPE
Correct answer: Don gloves last; doff gloves first
Gloves are the last item donned (to keep them clean while putting on other PPE) and the first removed (as they are the most contaminated item) to prevent spreading hazardous substances.
AM Safety Procedures & PPE 3
Which label color on a Safety Data Sheet (SDS) hazard diamond indicates a health hazard?