1.If two aircraft generate 40% of total delays but represent 25% of fleet, risk concentration is:

2.A flight number reversed becomes 396 more than original. What is difference between digits?

3.Which number continues: 3, 7, 15, 31, ?

4.An aircraft burns 2.4 tons/hour. Fuel cost is $780/ton. For a 2.5-hour flight, fuel cost is:

5.If turnaround performance improves but baggage mishandling increases, the likely control gap is in:

6.Three aircraft depart at intervals of 4, 6, and 9 hours. When will they next depart together?

7.A control requiring two signatures for procurement approval fails when both approvers report to the same director. The weakness relates to:

8.An aircraft operates 6 sectors daily. Average delay per sector is 14 minutes. If 40% of delays are reactionary, how many minutes daily are reactionary?

9.An internal audit discovers that aircraft turnaround time (TAT) reports are consistently 12 minutes lower than actual time recorded in ACARS logs. What is the MOST likely control weakness?

10.If CASK = $0.082 and RASK = $0.089, margin per ASK is:

11.Next term: 2, 6, 7, 21, 22, ?

12.An aircraft flies 2,400 block hours annually. If maintenance downtime is 360 hours, utilization rate =

13.If average ancillary revenue per passenger increases from $18 to $24 with constant passenger volume of 96,000 annually, revenue increase =

14.If 8 auditors audit 8 aircraft in 8 hours, how long for 16 auditors to audit 16 aircraft?

15.Break-even load factor formula: CASK/RASK. If CASK=0.074 and yield=0.095, break-even LF ≈

16.If one control fails 1 in 5 times, probability of failing twice consecutively?

17.If audit risk = IR × CR × DR and IR=0.8, CR=0.6, DR=0.5, audit risk=

18.If cargo weight discrepancies average 2.3% above manifest weight, what is the primary operational risk?

19.A route generates $2.1M revenue and $2.34M cost quarterly. Contribution margin % =

20.If A>B, B>C, but C>A possible?

21.A z-score of 2.5 in expense variance analysis suggests:

22.If revenue grows 8% but cost grows 12%, margin trend is:

23.Standard deviation of delay times increases while mean remains constant. Operational implication:

24.If all dispatchers are auditors and some auditors are pilots, which is certain?

25.If maintenance deferrals increase by 18% but aircraft dispatch reliability remains constant, the auditor should FIRST:

26.If 2 aircraft can cover 5 routes in rotation, minimum aircraft needed for 12 routes proportionally?

27.An airline operates 7 aircraft. 2 are grounded for heavy maintenance. Dispatch reliability target is 95%. What audit concern arises if actual

28.A box contains 3 red, 4 blue, 5 green tags. Probability of green?

29.If probability of delay = 0.2 per flight, probability of no delay in 3 consecutive flights?

31.An operations manager approves overtime for ground staff based on handwritten rosters not matched to biometric attendance. Which audit test is MOST effective?

32.If yield drops 3% but load factor increases 5%, overall revenue impact is BEST described as:

33.Find odd one: RASK, CASK, MEL, EBITDA

34.A cargo weight doubles each leg. Starting 500kg. After 4 legs?

35.Which is logically inconsistent?

36.If maintenance team doubles efficiency, time reduces by what fraction?

37.Fuel variance: Budget = 5,200 tons; Actual = 5,460 tons. Variance % =

38.Clock angle at 3:20?

39.Correlation coefficient between fuel price and operating cost is 0.92. This indicates:

40.If delay increases fuel burn 2% per 10 minutes, 30-minute delay increases by:

41.If turnaround reduction saves 6 minutes per flight across 2,000 flights annually, total time saved:

42.Fleet average age increases from 6 to 8 years, maintenance cost rises 14%. If baseline was $9M, new cost ≈

43.Load factor = 78%, seats = 120. Average fare = $210. What is revenue per flight?

44.Five stations report delays: 12, 18, 25, 9, 16. Median?

45.Which audit procedure BEST validates route profitability in operations audit?

46.If audit sample confidence level is 95% and error rate found is 6% vs tolerable 4%, conclusion:

48.If average delay cost per minute is $75 and monthly delay minutes total 1,240, total delay cost is:

49.Sequence: 1, 4, 9, 16, ?

50.If flight dispatch reconciles fuel uplift using supplier invoices only, without comparing against onboard fuel logs, the key audit risk is:

51.If 18 flights out of 240 monthly flights exceed 15-minute delay threshold, OTP =

52.When auditing aircraft catering contracts, the MOST relevant KPI for operational efficiency is: